WO2017119486A1 - Battery, method for manufacturing same, battery pack, and electronic device - Google Patents

Battery, method for manufacturing same, battery pack, and electronic device Download PDF

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Publication number
WO2017119486A1
WO2017119486A1 PCT/JP2017/000280 JP2017000280W WO2017119486A1 WO 2017119486 A1 WO2017119486 A1 WO 2017119486A1 JP 2017000280 W JP2017000280 W JP 2017000280W WO 2017119486 A1 WO2017119486 A1 WO 2017119486A1
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WO
WIPO (PCT)
Prior art keywords
battery
exterior material
housing portion
battery according
accommodating
Prior art date
Application number
PCT/JP2017/000280
Other languages
French (fr)
Japanese (ja)
Inventor
吉一 堀越
雄介 丹治
ユミ 渡辺
Original Assignee
ソニー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ソニー株式会社 filed Critical ソニー株式会社
Priority to CN201780005481.7A priority Critical patent/CN108496268A/en
Priority to JP2017560434A priority patent/JP6690654B2/en
Priority to EP17736023.7A priority patent/EP3386018A4/en
Publication of WO2017119486A1 publication Critical patent/WO2017119486A1/en
Priority to US16/025,033 priority patent/US20180316041A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/049—Processes for forming or storing electrodes in the battery container
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • H01M50/136—Flexibility or foldability
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present technology relates to a battery including a film-shaped exterior material, a manufacturing method thereof, an assembled battery, and an electronic device.
  • a battery is often provided with a circuit member having a protective circuit element or the like.
  • a secondary battery that can be repeatedly charged and used is generally provided with a circuit member as described above.
  • the exterior material is folded in half, and the electrode body is sealed by sealing the three sides other than the bent portion.
  • Many batteries used as a storage space are used (see, for example, Patent Document 1).
  • An object of the present technology is to provide a battery that can improve volumetric efficiency, a manufacturing method thereof, an assembled battery, and an electronic device.
  • the first technique includes a substantially cylindrical electrode body and a substantially cylindrical housing portion that houses the electrode body, and the folding is located on the peripheral surface side of the periphery of the housing portion.
  • the battery is provided with a film-like exterior material provided with a seal portion in three directions except the portion, and the seal portion provided on the end surface side of the housing portion is a battery that is displaced from the center position of the end surface.
  • the second technology is an assembled battery in which a plurality of batteries of the first technology are connected.
  • the third technology is an electronic device including the battery of the first technology.
  • a substantially partial cylindrical first housing portion and a substantially partial cylindrical second housing portion that extend in the same direction and are arranged in a direction orthogonal to the extending direction and have different depths are formed into a film.
  • the volumetric efficiency of the battery can be improved.
  • FIG. 1A and 1B are perspective views illustrating an example of an overview of a battery according to a first embodiment of the present technology.
  • FIG. 1C is a front view showing an example of an overview of the battery according to the first embodiment of the present technology.
  • FIG. 2 is an exploded perspective view showing an example of the configuration of the battery according to the first embodiment of the present technology.
  • FIG. 3A is a perspective view illustrating an example of an overview of a battery according to a modified example of the first embodiment of the present technology.
  • FIG. 3B is a front view illustrating an example of an overview of a battery according to a modification of the first embodiment of the present technology.
  • FIG. 4 is a schematic cross-sectional view showing an example of the configuration of the exterior material.
  • FIG. 5 is a schematic cross-sectional view illustrating an example of the configuration of the deep drawing apparatus according to the first embodiment of the present technology.
  • FIG. 6A, FIG. 6B, FIG. 6C, and FIG. 6D are process diagrams for explaining an example of the battery manufacturing method according to the first embodiment of the present technology.
  • FIG. 7A, FIG. 7B, and FIG. 7C are process diagrams for explaining an example of the battery manufacturing method according to the first embodiment of the present technology.
  • FIG. 8 is a schematic cross-sectional view illustrating an example of the configuration of a deep drawing apparatus according to a modification of the first embodiment of the present technology.
  • FIG. 9A is a perspective view illustrating an example of an overview of a battery according to the second embodiment of the present technology.
  • FIG. 9B is a side view showing an example of an overview of a battery according to the second embodiment of the present technology.
  • FIG. 9C is a rear view illustrating an example of an overview of a battery according to the second embodiment of the present technology.
  • FIG. 10 is a side view showing an example of an overview of a battery according to a reference example.
  • FIG. 11A and FIG. 11B are perspective views illustrating an example of an overview of a battery according to a modification of the second embodiment of the present technology.
  • FIG. 12 is a side view illustrating an example of an overview of a battery according to a modification of the second embodiment of the present technology.
  • FIG. 13A is a side view showing an example of an overview of the first assembled battery according to the third embodiment of the present technology.
  • FIG. 13B is a side view showing an example of an overview of the second assembled battery according to the third embodiment of the present technology.
  • FIG. 14A is a side view showing an example of an overview of a third assembled battery according to the third embodiment of the present technology.
  • FIG. 14B is a side view showing an example of an overview of a fourth assembled battery according to the third embodiment of the present technology.
  • FIG. 15A is a side view showing an example of an overview of the first assembled battery according to Reference Example 1.
  • FIG. FIG. 15B is a side view showing an example of an overview of the second assembled battery according to Reference Example 2.
  • FIG. 16A is a side view showing an example of an overview of a third assembled battery according to Reference Example 3.
  • FIG. 16B is a side view showing an example of an overview of the fourth assembled battery according to Reference Example 4.
  • FIG. 17 is a block diagram illustrating an example of a configuration of an electronic device according to the fourth embodiment of the present technology.
  • Embodiments of the present technology will be described in the following order.
  • First embodiment (example of battery) 1.1 Battery Configuration 1.2 Deep Drawing Machine 1.3 Battery Manufacturing Method 1.4 Effects 1.5 Modifications Second Embodiment (Example of Battery) 2.1 Battery configuration 2.2 Effects 2.3 Modifications 3.
  • Third embodiment (example of assembled battery) 3.1 Configuration of assembled battery 3.2 Modification 4
  • Fourth Embodiment (Example of Electronic Device) 4.1 Configuration of electronic device 4.2 Modification
  • FIG. 2 shows an example of the configuration of the battery according to the first embodiment of the present technology.
  • the film-clad battery (hereinafter simply referred to as “battery”) according to the first embodiment of the present technology is a so-called lithium ion secondary battery, and is a substantially cylindrical wound electrode body (hereinafter simply referred to as “electrode body”).
  • electrode body a substantially cylindrical wound electrode body
  • Seal portions 2P, 2Q provided in three directions except for 1 and a substantially cylindrical housing portion 2W for housing the electrode body 1 and a folded portion 2D on the peripheral surface side of the periphery of the housing portion 2W.
  • a film-shaped exterior member 2 having 2R, and a positive electrode lead 3 and a negative electrode lead 4 connected to the electrode body 1 are provided.
  • the seal portions 2P and 2Q are provided on both end surface sides of the accommodating portion 2W, and the seal portion 2R is provided on the peripheral surface side of the accommodating portion 2W.
  • the seal portions 2P and 2Q are provided so as to deviate from the center of the substantially circular end surface of the accommodating portion 2W and stand substantially perpendicular to the end surface.
  • the seal portion 2R may be erected substantially perpendicular to the substantially cylindrical peripheral surface of the housing portion 2W, or as shown in FIGS. 3A and 3B. Although it may be bent so as to follow the substantially cylindrical peripheral surface of the portion 2W, it is preferably bent like the latter. This is because the shape of the peripheral surface of the battery can be made closer to a cylindrical surface, and the entire battery can be further downsized.
  • Positive electrode lead 3 One end of the positive electrode lead 3 is electrically connected to the positive electrode of the electrode body 1, and the other end of the positive electrode lead 3 is led out of the exterior material 2 through the seal portion 2P.
  • One end of the negative electrode lead 4 is electrically connected to the negative electrode of the electrode body 1, and the other end of the negative electrode lead 4 is led out to the outside of the exterior material 2 through the seal portion 2Q.
  • a sealant material 5 ⁇ / b> A such as a heat sealing material is provided between the positive electrode lead 3 and the exterior material 2.
  • a sealant material 5 ⁇ / b> B such as a heat sealing material is provided between the negative electrode lead 4 and the exterior material 2.
  • connection position between the positive electrode lead 3 and the electrode body 1 and the connection position between the negative electrode lead 4 and the electrode body 1 are not particularly limited, and the inner peripheral portion, the middle peripheral portion, and the outer peripheral portion of the electrode body 1 are not limited. Any of these may be used.
  • connection positions thereof face each other on the peripheral surface of the electrode body 1. This is because the shape of the peripheral surface of the electrode body 1 can be made closer to a cylindrical surface.
  • the positive electrode lead 3 and the negative electrode lead 4 are preferably bent in an L shape along the end face of the electrode body 1. This is because the volumetric efficiency of the accommodating portion 2W can be increased.
  • the positive electrode lead 3 and the negative electrode lead 4 led out to the outside of the exterior material 2 may extend straight or may be folded back toward the end surface of the housing portion 2W.
  • Each of the positive electrode lead 3 and the negative electrode lead 4 is made of a metal material such as aluminum, copper, nickel, or stainless steel, and has a thin plate shape or a stitch shape.
  • Each of the sealant materials 5A and 5B is made of a material having adhesion to the positive electrode lead 3 and the negative electrode lead 4, for example, a polyolefin resin such as polyethylene, polypropylene, modified polyethylene, or modified polypropylene.
  • the exterior material 2 extends in the same direction and is arranged in a direction perpendicular to the extending direction, and has two substantially partial cylindrical accommodating portions 2X and 2Y having different depths. It has peripheral portions 2A, 2B, and 2C provided on three sides of the both end surface sides and the peripheral surface side (side surface side) of the accommodating portions 2X and 2Y.
  • the substantially partial columnar shape means a shape obtained by cutting a substantially columnar shape in the axial direction and dividing it into two.
  • the substantially partial cylindrical shape of the accommodating portion 2X is one shape divided into two as described above, and the substantially partial cylindrical shape of the accommodating portion 2Y is the other shape divided into two as described above.
  • the exterior material 2 is folded at a folded portion 2D between the adjacent accommodating portions 2X and 2Y, and the peripheral portions 2A, 2B and 2C of the accommodating portions 2X and 2Y are overlapped with each other, and the accommodating portions 2X and 2Y are combined. Yes.
  • the overlapped peripheral edge portions 2A, 2B, and 2C are sealed by heat fusion or the like, respectively, so that seal portions 2P, 2Q, and 2R are formed.
  • a substantially cylindrical accommodating portion 2W is formed by the combined substantially cylindrical accommodating portions 2X and 2Y.
  • the folded portion 2D is preferably provided so as not to protrude from the peripheral surface of the housing portion 2W. This is because the shape of the peripheral surface of the battery can be made closer to a cylindrical surface. Here, simple wrinkles of the exterior material 2 are excluded from the “protrusion”.
  • the seal portion 2R is preferably bent so as to follow the substantially cylindrical peripheral surface of the accommodating portion 2W. In this case, the seal portion 2R is formed on the substantially partial cylindrical peripheral surface of the accommodating portion 2X. It may be bent so as to follow, or may be bent so as to follow the substantially partial cylindrical peripheral surface of the accommodating portion 2Y, but the substantially partial cylindrical peripheral surface of the accommodating portion 2Y having a shallower depth. It is preferable to be bent so as to follow.
  • Exterior material 2 has plasticity.
  • the exterior material 2 is a so-called laminate film, and is provided on the metal layer 21, the surface protective layer 22 provided on one surface of the metal layer 21, and the other surface of the metal layer 21, as shown in FIG. 4. And a heat-fusible layer 23.
  • the packaging material 2 may further include an adhesive layer between one or both of the surface protective layer 22 and the metal layer 21 and between the heat fusion layer 23 and the metal layer 21 as necessary.
  • the surface on the surface protective layer 22 side is the outer surface (hereinafter referred to as “the outer surface of the exterior material 2”), and the surface on the heat-sealing layer 23 side accommodates the electrode body 1.
  • the inner surface hereinafter referred to as “the inner surface of the exterior material 2”).
  • the metal layer 21 plays a role of preventing the entry of moisture or the like and protecting the electrode body 1 as a stored item.
  • a material of the metal layer 21 for example, a metal foil made of aluminum or an aluminum alloy is used.
  • a material of the surface protective layer 22 for example, nylon or polyethylene terephthalate is used from the viewpoint of toughness and flexibility.
  • a material of the heat-fusible layer 23 for example, a polyolefin resin such as polyethylene, polypropylene, modified polyethylene, or modified polypropylene is used from the viewpoint of flexibility and suppression of ingress of moisture and the like.
  • the material for the adhesive layer for example, an acrylic adhesive, a polyester adhesive, or a polyurethane adhesive is used.
  • the exterior material 2 is further provided with a colored layer from the viewpoint of the appearance and the like, or contains a coloring material in at least one of the surface protective layer 22, the thermal fusion layer 23, and the adhesive layer. Also good.
  • the electrode body 1 includes a positive electrode, a negative electrode, and a separator each having a long rectangular shape, and has a winding structure in which the positive electrode and the negative electrode are wound in the longitudinal direction via the separator.
  • the positive electrode includes, for example, a positive electrode active material layer having a positive electrode current collector made of a metal foil such as aluminum and having a positive electrode active material on both surfaces thereof.
  • the negative electrode includes, for example, a negative electrode active material layer having a negative electrode current collector made of a metal foil such as copper and having a negative electrode active material on both surfaces thereof. Note that nickel, stainless steel, or the like can also be used as a material for the positive electrode current collector and the negative electrode current collector.
  • the positive electrode active material is a positive electrode material capable of inserting and extracting lithium, for example, a lithium-containing compound such as lithium oxide, lithium phosphorus oxide, lithium sulfide, or an intercalation compound containing lithium is suitable, Two or more of these may be mixed and used.
  • a lithium-containing compound having lithium, a transition metal element, and oxygen is preferable.
  • examples of such lithium-containing compounds include lithium composite transition metal oxides having a layered rock salt structure or lithium composite phosphates having an olivine structure.
  • the lithium-containing compound preferably contains at least one selected from the group consisting of cobalt, nickel, manganese, and iron as a transition metal element.
  • positive electrode materials capable of inserting and extracting lithium include inorganic compounds not containing lithium, such as MnO 2 , V 2 O 5 , V 6 O 13 , NiS, and MoS.
  • the negative electrode active material is a negative electrode material capable of inserting and extracting lithium.
  • the graphite it is preferable to use natural graphite subjected to spheroidizing treatment or the like, or substantially spherical artificial graphite.
  • artificial graphite artificial graphite obtained by graphitizing mesocarbon microbeads (MCMB), artificial graphite obtained by graphitizing or pulverizing a coke raw material, and the like are preferable.
  • Examples of the cokes include pitch coke, needle coke, and petroleum coke.
  • An organic polymer compound fired body is a carbonized material obtained by firing a polymer material such as phenol resin or furan resin at an appropriate temperature, and in part, it is made of non-graphitizable carbon or graphitizable carbon. Some are classified.
  • Examples of the polymer material include polyacetylene and polypyrrole. These carbon materials are preferable because the change in crystal structure that occurs during charge and discharge is very small, a high charge and discharge capacity can be obtained, and good cycle characteristics can be obtained.
  • examples of the negative electrode material capable of inserting and extracting lithium include a material containing at least one of a metal element and a metalloid element as a constituent element.
  • This negative electrode material may be a single element, alloy, or compound of a metal element or metalloid element, or a mixture or composite thereof. In addition, these may be a solid solution, a commensal body (a mixed solution), an intermetallic compound, or a mixture of two or more of these.
  • examples of the metal element and metalloid element include magnesium, boron, aluminum, gallium, indium, silicon, germanium, tin, lead, bismuth, cadmium, silver, zinc, hafnium, zirconium, yttrium, palladium, platinum, and the like. .
  • These may be crystalline or amorphous (amorphous).
  • those containing a group 4B metal element or metalloid element in the short periodic table are preferable, and those containing at least one of silicon and tin as a constituent element are particularly preferable. This is because silicon and tin have a large ability to occlude and release lithium, and a high energy density can be obtained.
  • the separator allows lithium ions to pass through while preventing current short-circuiting due to contact between the positive and negative electrodes.
  • the separator is made of a synthetic resin made of polyethylene, polypropylene, polytetrafluoroethylene, a mixture or a copolymer thereof, and the like. It may be a porous film made of a porous film or ceramic, and may be a laminate of these two or more porous films. Among them, a polyolefin porous film is preferable because it is excellent in short-circuit prevention effect and can improve battery safety due to a shutdown effect at high temperatures, and a polyethylene porous film is particularly preferable.
  • the electrode body 1 contains a non-aqueous electrolyte.
  • an electrolyte layer containing a nonaqueous electrolytic solution and a polymer compound that holds the nonaqueous electrolytic solution may be provided between the positive and negative electrodes together with the separator.
  • the electrolyte layer may be used in place of the separator, and no separator may be provided.
  • the nonaqueous electrolytic solution includes a solvent and an electrolyte salt.
  • the non-aqueous electrolyte may further contain a known additive.
  • solvent examples include ethylene carbonate, propylene carbonate, butylene carbonate, vinylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, 4-fluoro-1,3-dioxolan-2-one, ⁇ -butrolactone, and ⁇ -valerolactone.
  • the electrolyte salt contains one or more lithium salts.
  • lithium salts include lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium perchlorate, lithium trifluoromethanesulfonate, lithium bis (trifluoromethanesulfonyl) imide, bis ( Examples include pentafluoroethanesulfonyl) imido lithium, tris (trifluoromethanesulfonyl) methyl lithium, lithium chloride, lithium bromide and the like.
  • polymer compound examples include polyacrylonitrile, polyvinylidene fluoride, a copolymer of vinylidene fluoride and hexafluoropropylene, polytetrafluoroethylene, polyhexafluoropropylene, polyethylene oxide, polypropylene oxide, polyphosphazene, and polysiloxane.
  • polyacrylonitrile, polyvinylidene fluoride, polyhexafluoropropylene, or polyethylene oxide is preferable.
  • the deep drawing apparatus includes a punch 31 and a die 41 having a hole 41A into which the punch 31 is pushed.
  • the punch 31 is held by a drive unit (not shown) so that it can be pushed into the hole 41A and extracted from the hole 41A.
  • the punch 31 extends in the same direction, and is arranged in a direction orthogonal to the extending direction, and has two substantially partial cylindrical embossed portions (hereinafter simply referred to as “molded portions”) 32 and 33 having different heights. have.
  • the forming portions 32 and 33 of the punch 31 are configured to satisfy the relationships of the following formulas (1a) to (3a).
  • d1> d2 (1a) (However, in the formula (1a), d1 and d2 are the heights of the molding parts 32 and 33, respectively.)
  • w1 w2 (3a) (However, in formula (3a), w1 and w2 are the widths of the molding parts 32 and 33, respectively.)
  • the forming portions 32 and 33 of the punch 31 may be configured to satisfy the relationships of the following formulas (1b) to (3b). d1> d2 (1b) r1> r2 (2b) w1> w2 (3b)
  • the die 41 includes a lower die (lower mold) 42 having a mounting surface 42B on which the outer packaging material 2 is placed, and an upper die (upper die) having a pressing surface 43B for pressing wrinkles of the outer packaging material 2 placed on the lower die 42. Mold) 43, and has a configuration capable of sandwiching the exterior material 2 between the lower die 42 and the upper die 43.
  • the lower die 42 and the upper die 43 respectively have hole portions 42A and 43A that are through holes, and the hole portions 41A are configured by overlapping the hole portions 42A and 43A.
  • the lower die 42 preferably has a plate-like support member 44 that supports the exterior material 2 deformed by the punch 31 at the boundary portion 34 between the molding portions 32 and 33.
  • the support member 44 is provided at the center of the hole 42 ⁇ / b> A so that the top thereof faces the boundary 34.
  • the top portion (tip portion) of the support member 44 facing the boundary portion 34 is shifted in the pressing direction (pressing direction) of the punch 31 with respect to the mounting surface 42B of the lower die 42, more specifically, the lower portion. It is preferable to be at a position (inside) lower than the mounting surface 42B of the die 42.
  • the difference in position between the top of the support member 44 and the mounting surface 42B of the lower die 42 in the direction in which the punch 31 is pushed in may be not less than half the thickness of the support member 44 and not more than 10 times the thickness of the exterior material 2.
  • the accommodating portion 2W can be made to have a shape closer to a columnar shape.
  • the exterior member 2 is formed by embossing as follows using the deep drawing apparatus shown in FIG. First, the exterior material 2 is sandwiched between the mounting surface 42 ⁇ / b> B of the lower die 42 and the pressing surface 43 ⁇ / b> B of the upper die 43. Next, the punch 31 is lowered and pushed into the hole 41 ⁇ / b> A, the inner surface (first surface) of the exterior material 2 is pressed by the molding portions 32 and 33, and the outer surface of the exterior material 2 (at the position of the boundary portion 34). The exterior material 2 is deformed while the second surface is supported by the support member 44. When the molding parts 32 and 33 are pushed to a predetermined depth, the punch 31 is raised and extracted from the hole 41A. Thereby, as shown in FIG. 6A, the accommodating portions 2 ⁇ / b> X and 2 ⁇ / b> Y are formed in the exterior material 2.
  • the accommodating portions 2X and 2Y use the punches 31 satisfying the relations of the above formulas (1a) to (3a) to satisfy the relations of the following formulas (1A) to (3A). Molded to fill.
  • D1> D2 (1A) (However, in the formula (1A), D1 and D2 are the depths of the accommodating portions 2X and 2Y with reference to the inner surfaces of the peripheral portions 2A, 2B, and 2C, respectively.)
  • R1 R2 (2A) (However, in the formula (2A), R1 and R2 are radii of the accommodating portions 2X and 2Y, respectively.)
  • W1 W2 (3A) (However, in Formula (3A), W1 and W2 are the widths of the accommodating portions 2X and 2Y, respectively.)
  • the accommodating portions 2X and 2Y use the punches 31 satisfying the relations of the above formulas (1b) to (3b) to satisfy the relations of the following formulas (1B) to (3B). You may shape
  • the width of the boundary portion 34 of the punch 31 and the top portion of the support member 44 is narrow in the “molding step of the exterior material”.
  • the electrode body 1 is sealed with the exterior material 2 by sealing three sides of the periphery of the accommodating portion 2W except the folded portion 2D on the peripheral surface side.
  • the electrode body 1 to which the positive electrode lead 3 and the negative electrode lead 4 are attached is accommodated in the accommodating portion 2X having a deeper depth among the accommodating portions 2X and 2Y.
  • the exterior material 2 is folded at the folded portion 2D between the housing portions 2X and 2Y, and as shown in FIG. 6D, both end surfaces and the circumferential surface side of the periphery of the housing portions 2X and 2Y.
  • the peripheral portions 2A, 2B, and 2C surrounding the three sides (side surface side) are overlapped with each other, and the accommodating portion 2W is formed by combining the accommodating portions 2X and 2Y.
  • a sealant material 5 ⁇ / b> A is disposed between the positive electrode lead 3 and the exterior material 2
  • a sealant material 5 ⁇ / b> B is disposed between the negative electrode lead 4 and the exterior material 2.
  • the peripheral portions 2A and 2B overlapped on both end surfaces of the accommodating portion 2W are sealed by heat-sealing or the like, so that the sealing portions 2P, 2Q is formed, and the opening 2S is formed on the peripheral surface side of the accommodating portion 2W (see FIG. 6D).
  • the electrode body 1 accommodated in the exterior material 2 in such a state is referred to as a battery precursor.
  • the battery precursor is held by the recesses 51 ⁇ / b> A and 52 ⁇ / b> A of the molds 51 and 52.
  • the recesses 51A and 52A have a substantially partial columnar shape having substantially the same radius as the housing portion 2X and the housing portion 2Y.
  • the battery precursor held by the molds 51 and 52 is conveyed into a vacuum chamber (not shown) and fixed at a predetermined position.
  • the opening 2S (that is, the peripheral portions 2C and 2C) is sandwiched from both sides by the heat blocks 53 and 54 as heating means provided in the vacuum chamber, so that the opening 2S is sealed by heat sealing or the like to form a seal portion 2R.
  • sticker part 2R can be formed, deaerating the exterior material 2 inside.
  • the opening 2S is sandwiched from both sides by the heat blocks 53 and 54 to apply tension to the exterior material 2 so that the exterior material 2 is brought into close contact with the electrode body 1 and the accommodating portion 2W. It is preferable that the folded portion 2D does not protrude from the peripheral surface. This is because the adhesion of the exterior material 2 to the electrode body 1 can be improved, and the housing portion 2W can be made to have a shape closer to a columnar shape.
  • the seal portion 2R and the storage portion are arranged so that the seal portion 2R follows the peripheral surface of the storage portion 2W.
  • the seal portion 2 ⁇ / b> R may be fixed by pasting the 2 W peripheral surface by heat sealing or the like.
  • the seal portions 2P and 2Q that are erected substantially perpendicular to the end surface of the housing portion 2W are provided so as to be shifted from the center of the end surface of the housing portion 2W.
  • the accommodation space can be widened. Therefore, when considering the configuration including the circuit member, the volume efficiency of the entire battery can be improved. Therefore, it is possible to provide a battery suitable for application to a portable device, a wearable device, or the like.
  • the accommodation space in the end surface of the accommodating portion 2W is a substantially partial cylindrical space formed by virtually extending one end surface of the accommodating portion 2X from the position to the tip position of the seal portion 2P. Means.
  • the seal portion 2R provided on the peripheral surface side of the electrode body 1 can be provided at one place. Therefore, the volumetric efficiency of the battery can be improved.
  • the seal portion 2R is provided so as to follow the substantially cylindrical peripheral surface of the storage portion 2W, and the folded portion 2D is provided without protruding from the peripheral surface of the storage portion 2W, the periphery of the battery
  • the surface can be made a shape closer to a cylindrical surface. Therefore, the volumetric efficiency of the battery can be further improved.
  • the lower die 42 extends in the same direction as shown in FIG. 8 in place of the hole 42A and the support member 44 shown in FIG. 5, and is arranged in a direction perpendicular to the extending direction.
  • Two different substantially cylindrical recesses 45 and 46 may be provided.
  • the substantially partial columnar shapes of the recesses 45 and 46 are substantially the same shape as the substantially partial columnar shapes of the molding portions 32 and 33, respectively.
  • the molding parts 32 and 33 are pressed against the inner surface of the exterior material 2 to deform the exterior material 2, and the exterior material 2 is sandwiched between the molding parts 32 and 33 and the recesses 45 and 46. 2Y is formed. In this case, variation in the shape of the housing portions 2X and 2Y can be suppressed.
  • the case where the battery precursor held by the molds 51 and 52 is transported into the vacuum chamber has been described as an example.
  • the molds 51 and 52 are previously stored in the vacuum chamber.
  • the battery precursor may be transported to the molds 51 and 52.
  • the battery according to the second embodiment of the present technology includes a printed circuit board 6 and a circuit element 7 arranged on the seal portion 2P on one end face of the housing portion 2W.
  • the printed circuit board 6 and the circuit element 7 are examples of circuit members, and are arranged in the accommodation space on the end face side of the accommodating portion 2X having a larger area among the end surfaces of the accommodating portions 2X and 2Y.
  • the seal portion 2Q provided on the other end surface side of the housing portion 2W is bent toward the center side of the end surface and is substantially parallel to the end surface.
  • One or both of the printed circuit board 6 and the circuit element 7 are preferably located inside the outer periphery of the end face when viewed from a direction perpendicular to the one end face of the housing portion 2W. This is because the volume efficiency of the entire battery including the circuit member can be further improved.
  • One or both of the printed circuit board 6 and the circuit element 7 are preferably provided substantially parallel or substantially perpendicular to one end face of the accommodating portion 2W. This is because one or both of the printed circuit board 6 and the circuit element 7 are easily located inside the outer periphery of the end face as described above.
  • the positive electrode lead 3 led out from one end surface side of the housing portion 2W is folded back toward one end surface of the housing portion 2W, and the folded portion is electrically connected to the printed circuit board 6.
  • the negative electrode lead 4 led out from the other end face side of the housing portion 2W is electrically connected to the printed circuit board 6 via a plate-like or linear connection member 4A.
  • the printed circuit board 6 is bent in an L shape, and is disposed on the seal portion 2P so as to follow the end surface of the accommodating portion 2X and the seal portion 2P.
  • the printed circuit board has a positive electrode terminal and a negative electrode terminal (not shown) for connecting to an external device.
  • the type of the printed board is not particularly limited, and may be any of a rigid board, a flexible board, and a rigid flexible board.
  • the circuit element 7 is mounted on the printed circuit board 6 disposed on the seal portion 2P.
  • the circuit element 7 includes a protection circuit, a voltage detection circuit, and the like, and is electrically connected to the positive electrode lead 3 and the negative electrode lead 4 via the printed circuit board 6.
  • the configuration in which the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P from which the positive electrode lead 3 is led is described as an example, but the present technology is not limited to this.
  • the printed circuit board 6 and the circuit element 7 may be arranged on the seal part 2Q from which the negative electrode lead 4 is led out, or a configuration in which the printed circuit board 6 and the circuit element 7 are arranged on both the seal parts 2P and 2Q is adopted. May be.
  • the case where the printed circuit board 6 is bent in an L shape has been described as an example.
  • the form of the printed circuit board is not limited to this.
  • a printed board bent into a shape other than the L-shape may be used, a flat printed board may be used, or a printed board having a multilayer structure or a folded structure may be used.
  • the number of printed circuit boards 6 is not particularly limited, and a plurality of printed circuit boards 6 may be arranged on the seal portion 2P. Since the seal part 2P is displaced from the center of the substantially circular end face of the accommodating part 2W, it is easy to arrange such a multilayer structure or a folded printed circuit board or a plurality of printed circuit boards 6 on the seal part 2P. is there.
  • the negative electrode lead 4 and the printed board 6 are connected by the connecting member 4A.
  • the negative electrode lead 4 and the printed board 6 are directly connected to each other by increasing the length of the negative electrode lead 4. You may make it connect.
  • the printed circuit board 6 extends in the direction perpendicular to the other end surface of the housing portion 2W has been described as an example.
  • the printed circuit board 6 may be extended in the horizontal direction with respect to the one end surface of the housing portion 2W, as shown in FIG. 11B. May be.
  • the positive electrode lead 3 and the negative electrode lead 4 may be led out from a seal portion 2R provided on the peripheral surface side of the accommodating portion 2W.
  • the derived positive electrode lead 3 and negative electrode lead 4 are connected to the printed circuit board 6 via plate-like or linear connection members 3B and 4B, respectively.
  • FIG. 13A shows a configuration of the first assembled battery.
  • the first assembled battery has a configuration in which a plurality of batteries 10 are connected in series.
  • illustration of the seal portion 2R is omitted.
  • the symbols “+” and “ ⁇ ” represent the polarities of the positive electrode lead 3 and the negative electrode lead 4 drawn out from the end face of the housing portion 2W.
  • the end surface of the housing portion 2 ⁇ / b> W from which the positive electrode lead 3 of one adjacent battery 10 is led out is opposed to the end surface of the housing portion 2 ⁇ / b> W from which the negative electrode lead 4 of the other adjacent battery 10 is led out. In this way, they are arranged in the axial direction of the substantially cylindrical accommodating portions 2W.
  • the positive electrode lead 3 and the negative electrode lead 4 are connected to the opposing end surfaces.
  • the seal portions 2P and 2Q between the two adjacent batteries 10 are set substantially perpendicular to the end surface of the accommodating portion 2W.
  • One adjacent battery 10 is centered on the center axis of the substantially cylindrical housing 2W relative to the other battery 10 so that the seal portions 2Q and 2P do not interfere between the two adjacent batteries 10. It is rotated as an axis.
  • the angle of rotation is preferably about 180 degrees.
  • the seal part 2P of the battery 10 located at one end of the assembled battery is set up substantially perpendicular to the end surface of the housing part 2W.
  • the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P standing substantially vertically.
  • the positive electrode lead 3 of the battery 10 located at one end of the assembled battery is connected to the printed circuit board 6.
  • the seal part 2Q of the battery 10 located at the other end of the assembled battery is bent toward the center side of the end face of the accommodating part 2W and is substantially parallel to the end face.
  • the negative electrode lead 4 led out from the bent seal portion 2Q is connected to the printed circuit board 6 via a plate-like or linear connection member 4B.
  • FIG. 13B shows the configuration of the second assembled battery.
  • the seal portions 2P and 2Q between the two adjacent batteries 10 are provided so as to face each other, and are bent toward the center side of the end surface of the housing portion 2W so as to be substantially parallel to the end surface.
  • the configuration other than the above is the same as that of the assembled battery in the first example.
  • FIG. 14A shows a configuration of the third assembled battery.
  • the third assembled battery has a configuration in which a plurality of batteries 10 are connected in parallel.
  • illustration of the seal portion 2R is omitted.
  • the plurality of batteries 10 are arranged in the axial direction of the substantially cylindrical housing portion 2W so that the end faces of the housing portion 2W from which the negative electrode lead 4 is led out face each other.
  • the negative electrode leads 4 are connected to each other at the opposing end surfaces.
  • the seal portions 2Q and 2Q between the two adjacent batteries 10 are set substantially perpendicular to the end surface of the accommodating portion 2W.
  • One adjacent battery 10 is centered on the center axis of the substantially cylindrical housing 2W relative to the other battery 10 so that the seal portions 2Q and 2Q do not interfere between the two adjacent batteries 10. It is rotated as an axis.
  • the angle of rotation is preferably about 180 degrees.
  • the seal part 2P of the battery 10 located at one end of the assembled battery is set up substantially perpendicular to the end surface of the housing part 2W.
  • the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P standing substantially vertically.
  • the positive lead 3 of the battery 10 located at one end of the assembled battery is connected to the printed circuit board 6.
  • the seal part 2P of the battery 10 located at the other end of the assembled battery is bent toward the center side of the end face of the accommodating part 2W and is substantially parallel to the end face.
  • the positive electrode lead 3 led out from the bent seal portion 2P is connected to the printed circuit board 6 via a plate-like or linear connection member 3B.
  • the negative electrode lead 4 connected at the opposing end face is connected to the printed circuit board 6 via a plate-like or linear connection member 4B.
  • FIG. 14B shows a configuration of the fourth assembled battery.
  • the seal portions 2Q and 2Q between the two adjacent batteries 10 are provided so as to face each other, and are bent toward the center side of the end surface of the accommodating portion 2W so as to be substantially parallel to the end surface.
  • the assembled battery of Reference Examples 1 to 4 As the assembled batteries of Reference Examples 1 to 4, as shown in FIGS. 15A, 15B, 16A, and 16B, a battery in which seal portions 2P and 2Q are provided at the center of a substantially circular end surface of the accommodating portion 2W is used. Except for the above, it has the same configuration as the first to fourth assembled batteries.
  • the first and third assembled batteries a plurality of batteries 10 are used in which a seal portion 2P standing substantially perpendicular to the end surface of the housing portion 2W is provided offset from the center of the end surface of the housing portion 2W. For this reason, by rotating the adjacent one battery 10 with respect to the other battery 10 using the central axis of the accommodating portion 2W as the central axis of rotation, the seal portions 2Q, 2P or The seal portions 2Q and 2Q can be prevented from interfering with each other.
  • the assembled batteries of Reference Examples 1 and 3 it is inevitable that the seal portions 2Q and 2P or the seal portions 2Q and 2Q interfere between the two adjacent batteries 10. Therefore, the space between the batteries in the first and third assembled batteries is about half of the space between the batteries in the assembled batteries of Reference Examples 1 and 3. Therefore, the first and third assembled batteries can reduce the space between the batteries as compared to the assembled batteries of Reference Examples 1 and 3.
  • the seal portions 2Q, 2P or the seal portions 2Q, 2Q are bent toward the center side of the end surface of the housing portion 2W, and substantially parallel to the end surface.
  • the battery 10 is used. For this reason, the space width between the adjacent batteries 10 can be reduced.
  • the seal portions 2Q and 2P or the seal portions 2Q and 2Q between the two adjacent batteries 10 are provided so as to be shifted from and opposed to the center of the end surface of the housing portion 2W. For this reason, the height D of the space in which the folded seal portion 2Q can be accommodated can be increased.
  • the height D is equal to the sum of the “radius of the accommodating portion 2W” and the “shift amount from the center of the seal portions 2P and 2Q”.
  • the space width between the adjacent batteries 10 can be reduced, but the height D of the space in which the folded seal portion 2Q can be accommodated is widened. I can't.
  • the battery according to the first embodiment may be connected in series and parallel to constitute an assembled battery.
  • the first and / or second assembled battery and the third and / or fourth assembled battery may be connected to form a series-parallel assembled battery.
  • the electronic device 400 includes an electronic circuit 401 of the electronic device body and a battery pack 300.
  • the battery pack 300 is electrically connected to the electronic circuit 401 via the positive terminal 331a and the negative terminal 331b.
  • the electronic device 400 has a configuration in which the battery pack 300 is detachable by a user.
  • the configuration of the electronic device 400 is not limited to this, and the battery pack 300 is built in the electronic device 400 so that the user cannot remove the battery pack 300 from the electronic device 400. May be.
  • the positive terminal 331a and the negative terminal 331b of the battery pack 300 are connected to the positive terminal and the negative terminal of a charger (not shown), respectively.
  • the positive terminal 331a and the negative terminal 331b of the battery pack 300 are connected to the positive terminal and the negative terminal of the electronic circuit 401, respectively.
  • Examples of the electronic device 400 include a wearable device, a notebook personal computer, a tablet computer, a mobile phone (for example, a smartphone) or a portable information terminal (Personal Digital Assistant: PDA), a display device (LCD, EL display). , Electronic paper, etc.), imaging device (eg, digital still camera, digital video camera, etc.), audio equipment (eg, portable audio player), game machine, cordless phone, e-book, electronic dictionary, radio, headphones, navigation system, Memory card, pacemaker, hearing aid, electric tool, electric shaver, refrigerator, air conditioner, TV, stereo, water heater, microwave oven, dishwasher, washing machine, dryer, lighting equipment, toy, medical equipment, robot DOO, load conditioners, but such traffic can be mentioned, without such limited thereto.
  • the electronic circuit 401 includes, for example, a CPU, a peripheral logic unit, an interface unit, a storage unit, and the like, and controls the entire electronic device 400.
  • the battery pack 300 includes an assembled battery 301 and a charge / discharge circuit 302.
  • the assembled battery 301 is configured by connecting a plurality of secondary batteries 301a in series and / or in parallel.
  • the plurality of secondary batteries 301a are connected, for example, in n parallel m series (n and m are positive integers).
  • FIG. 17 shows an example in which six secondary batteries 301a are connected in two parallel three series (2P3S).
  • the secondary battery 301a the battery according to the first embodiment or its modification is used.
  • the charging / discharging circuit 302 is a control unit that controls charging / discharging of the assembled battery 301. Specifically, during charging, the charging / discharging circuit 302 controls charging of the assembled battery 301. On the other hand, at the time of discharging (that is, when the electronic device 400 is used), the charging / discharging circuit 302 controls the discharging of the electronic device 400.
  • the battery pack 300 includes the assembled battery 301 including a plurality of secondary batteries 301 a has been described as an example. However, the battery pack 300 is replaced with one assembled battery 301. You may employ
  • the present technology can also employ the following configurations.
  • a substantially cylindrical electrode body A substantially cylindrical storage portion that stores the electrode body, and a film-like exterior material provided with a seal portion in three directions excluding the folded portion on the peripheral surface side of the periphery of the storage portion, A battery in which a seal portion provided on an end surface side of the housing portion is deviated from a center position of the end surface.
  • the said accommodating part is a battery as described in (1) comprised by the substantially partial cylindrical 1st accommodating part and the substantially partial cylindrical 2nd accommodating part from which depth differs.
  • An electronic device comprising the battery according to any one of (1) to (12).
  • a substantially partial cylindrical first housing portion and a substantially partial cylindrical second housing portion that extend in the same direction and are arranged in a direction orthogonal to the extending direction are formed on the film-shaped exterior member.
  • a method for manufacturing a battery comprising: sealing three sides of the periphery of the accommodating portion constituted by the first accommodating portion and the second accommodating portion, excluding the folded portion on the peripheral surface side. (16) In the case of the said sealing, after sealing the both ends side of the said accommodating part, the peripheral surface side of the said accommodating part is sealed, deaeration inside the said exterior material (15). (17) The method for manufacturing a battery according to (16), wherein, when the peripheral surface side is sealed, tension is applied to the exterior material to closely contact the electrode body and the exterior material.
  • the thickness of the said supporting member is a manufacturing method of the battery in any one of (15) to (20) which is 10 times or less of the thickness of the said exterior material.
  • Electrode body 2 Exterior material 2W, 2X, 2Y Housing part 2A, 2B, 2C Peripheral part 2D Folding part 2P, 2Q, 2R Seal part 3 Positive electrode lead 4 Negative electrode lead 6
  • Circuit element 10

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  • Electrochemistry (AREA)
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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

A battery has an approximately columnar electrode body and an approximately columnar accommodating part for accommodating the electrode body, and is provided with a film-form cladding in which a sealing part is provided around the accommodating part on three sides excluding a folded part that is present on the peripheral surface side, and the sealing part provided at the end surface side of the accommodating part is offset from the center position of the end surface.

Description

電池およびその製造方法、組電池、ならびに電子機器Battery, manufacturing method thereof, assembled battery, and electronic device
　本技術は、フィルム状外装材を備える電池およびその製造方法、組電池、ならびに電子機器に関する。 The present technology relates to a battery including a film-shaped exterior material, a manufacturing method thereof, an assembled battery, and an electronic device.
　近年では、電池の安全性向上の観点から、保護回路素子などを有する回路部材が電池に備えられることが多くなっている。特に繰り返し充電して使用できる二次電池においては、上記のような回路部材が備えられることが一般的となっている。 In recent years, from the viewpoint of improving battery safety, a battery is often provided with a circuit member having a protective circuit element or the like. In particular, a secondary battery that can be repeatedly charged and used is generally provided with a circuit member as described above.
　携帯電話、携帯ポータブルプレーヤーやＰＤＡ（Personal Digital Assistant）などでは、外装材を二つ折りして、折り曲げ部以外の３辺をシールして電極体を封止した構成とし、シール部上を回路部材の収納空間として利用する電池が多く用いられている（例えば特許文献１参照）。 In cell phones, portable portable players, PDAs (Personal Digital Assistants), etc., the exterior material is folded in half, and the electrode body is sealed by sealing the three sides other than the bent portion. Many batteries used as a storage space are used (see, for example, Patent Document 1).
　ウエアラブル機器にも対応可能な電池としては、従来の金属外装缶を用いた電池よりも軽量な円柱状のフィルム外装型電池が提案されている（例えば特許文献２参照）。 As a battery that can be applied to wearable devices, a columnar film-clad battery that is lighter in weight than a battery that uses a conventional metal can has been proposed (for example, see Patent Document 2).
特開平１１－２９７２８０号公報JP 11-297280 A 特開２０１５－１１５２９３号公報JP 2015-115293 A
　しかし、上述の円柱状のフィルム外装型電池では、回路部材の収納空間を十分に確保することができないため、回路部材を含めた場合の電池全体の容積効率が低くなっている。 However, in the above-described columnar film-clad battery, the storage space for the circuit member cannot be secured sufficiently, so that the volume efficiency of the entire battery including the circuit member is low.
　本技術の目的は、容積効率を向上できる電池およびその製造方法、組電池、ならびに電子機器を提供することにある。 An object of the present technology is to provide a battery that can improve volumetric efficiency, a manufacturing method thereof, an assembled battery, and an electronic device.
　上述の課題を解決するために、第１の技術は、略円柱状の電極体と、電極体を収容する略円柱状の収容部を有し、収容部の周囲のうち周面側にある折り返し部を除く３方にシール部が設けられたフィルム状外装材とを備え、収容部の端面側に設けられたシール部は、端面の中心位置からずれている電池とするものである。 In order to solve the above-described problem, the first technique includes a substantially cylindrical electrode body and a substantially cylindrical housing portion that houses the electrode body, and the folding is located on the peripheral surface side of the periphery of the housing portion. The battery is provided with a film-like exterior material provided with a seal portion in three directions except the portion, and the seal portion provided on the end surface side of the housing portion is a battery that is displaced from the center position of the end surface.
　第２の技術は、第１の技術の電池が複数接続された組電池とするものである。 The second technology is an assembled battery in which a plurality of batteries of the first technology are connected.
　第３の技術は、第１の技術の電池を備える電子機器とするものである。 The third technology is an electronic device including the battery of the first technology.
　第４の技術は、同一方向に延設され、該延設の方向に直交する方向に並ぶ、深さが異なる略部分円柱状の第１収容部および略部分円柱状の第２収容部をフィルム状外装材に形成し、外装材を第１収容部および第２収容部の間で折り返して、第１収容部および第２収容部に略円柱状の電極体を収容し、第１収容部および第２収容部により構成された収容部の周囲のうち周面側にある折り返し部を除く３方をシールすることを含む電池の製造方法である。 According to a fourth technique, a substantially partial cylindrical first housing portion and a substantially partial cylindrical second housing portion that extend in the same direction and are arranged in a direction orthogonal to the extending direction and have different depths are formed into a film. Forming the outer packaging material between the first housing portion and the second housing portion, housing the substantially cylindrical electrode body in the first housing portion and the second housing portion, It is a manufacturing method of a battery including sealing three directions except the return part in the peripheral surface side among the circumference | surroundings of the accommodating part comprised by the 2nd accommodating part.
　以上説明したように、本技術によれば、電池の容積効率を向上できる。 As described above, according to the present technology, the volumetric efficiency of the battery can be improved.
図１Ａ、図１Ｂは、本技術の第１の実施形態に係る電池の概観の一例を示す斜視図である。図１Ｃは、本技術の第１の実施形態に係る電池の概観の一例を示す正面図である。1A and 1B are perspective views illustrating an example of an overview of a battery according to a first embodiment of the present technology. FIG. 1C is a front view showing an example of an overview of the battery according to the first embodiment of the present technology. 図２は、本技術の第１の実施形態に係る電池の構成の一例を示す分解斜視図である。FIG. 2 is an exploded perspective view showing an example of the configuration of the battery according to the first embodiment of the present technology. 図３Ａは、本技術の第１の実施形態の変形例に係る電池の概観の一例を示す斜視図である。図３Ｂは、本技術の第１の実施形態の変形例に係る電池の概観の一例を示す正面図である。FIG. 3A is a perspective view illustrating an example of an overview of a battery according to a modified example of the first embodiment of the present technology. FIG. 3B is a front view illustrating an example of an overview of a battery according to a modification of the first embodiment of the present technology. 図４は、外装材の構成の一例を示す概略断面図である。FIG. 4 is a schematic cross-sectional view showing an example of the configuration of the exterior material. 図５は、本技術の第１の実施形態に係る深絞り加工装置の構成の一例を示す概略断面図である。FIG. 5 is a schematic cross-sectional view illustrating an example of the configuration of the deep drawing apparatus according to the first embodiment of the present technology. 図６Ａ、図６Ｂ、図６Ｃ、図６Ｄはそれぞれ、本技術の第１の実施形態に係る電池の製造方法の一例を説明するための工程図である。FIG. 6A, FIG. 6B, FIG. 6C, and FIG. 6D are process diagrams for explaining an example of the battery manufacturing method according to the first embodiment of the present technology. 図７Ａ、図７Ｂ、図７Ｃはそれぞれ、本技術の第１の実施形態に係る電池の製造方法の一例を説明するための工程図である。FIG. 7A, FIG. 7B, and FIG. 7C are process diagrams for explaining an example of the battery manufacturing method according to the first embodiment of the present technology. 図８は、本技術の第１の実施形態の変形例に係る深絞り加工装置の構成の一例を示す概略断面図である。FIG. 8 is a schematic cross-sectional view illustrating an example of the configuration of a deep drawing apparatus according to a modification of the first embodiment of the present technology. 図９Ａは、本技術の第２の実施形態に係る電池の概観の一例を示す斜視図である。図９Ｂは、本技術の第２の実施形態に係る電池の概観の一例を示す側面図である。図９Ｃは、本技術の第２の実施形態に係る電池の概観の一例を示す背面図である。FIG. 9A is a perspective view illustrating an example of an overview of a battery according to the second embodiment of the present technology. FIG. 9B is a side view showing an example of an overview of a battery according to the second embodiment of the present technology. FIG. 9C is a rear view illustrating an example of an overview of a battery according to the second embodiment of the present technology. 図１０は、参考例に係る電池の概観の一例を示す側面図である。FIG. 10 is a side view showing an example of an overview of a battery according to a reference example. 図１１Ａ、図１１Ｂは、本技術の第２の実施形態の変形例に係る電池の概観の例を示す斜視図である。FIG. 11A and FIG. 11B are perspective views illustrating an example of an overview of a battery according to a modification of the second embodiment of the present technology. 図１２は、本技術の第２の実施形態の変形例に係る電池の概観の例を示す側面図である。FIG. 12 is a side view illustrating an example of an overview of a battery according to a modification of the second embodiment of the present technology. 図１３Ａは、本技術の第３の実施形態に係る第１の組電池の概観の一例を示す側面図である。図１３Ｂは、本技術の第３の実施形態に係る第２の組電池の概観の一例を示す側面図である。FIG. 13A is a side view showing an example of an overview of the first assembled battery according to the third embodiment of the present technology. FIG. 13B is a side view showing an example of an overview of the second assembled battery according to the third embodiment of the present technology. 図１４Ａは、本技術の第３の実施形態に係る第３の組電池の概観の一例を示す側面図である。図１４Ｂは、本技術の第３の実施形態に係る第４の組電池の概観の一例を示す側面図である。FIG. 14A is a side view showing an example of an overview of a third assembled battery according to the third embodiment of the present technology. FIG. 14B is a side view showing an example of an overview of a fourth assembled battery according to the third embodiment of the present technology. 図１５Ａは、参考例１に係る第１の組電池の概観の一例を示す側面図である。図１５Ｂは、参考例２に係る第２の組電池の概観の一例を示す側面図である。FIG. 15A is a side view showing an example of an overview of the first assembled battery according to Reference Example 1. FIG. FIG. 15B is a side view showing an example of an overview of the second assembled battery according to Reference Example 2. 図１６Ａは、参考例３に係る第３の組電池の概観の一例を示す側面図である。図１６Ｂは、参考例４に係る第４の組電池の概観の一例を示す側面図である。FIG. 16A is a side view showing an example of an overview of a third assembled battery according to Reference Example 3. FIG. FIG. 16B is a side view showing an example of an overview of the fourth assembled battery according to Reference Example 4. 図１７は、本技術の第４の実施形態に係る電子機器の構成の一例を示すブロック図である。FIG. 17 is a block diagram illustrating an example of a configuration of an electronic device according to the fourth embodiment of the present technology.
　本技術の実施形態について以下の順序で説明する。
１．第１の実施形態（電池の例）
　１．１　電池の構成
　１．２　深絞り加工装置
　１．３　電池の製造方法
　１．４　効果
　１．５　変形例
２．第２の実施形態（電池の例）
　２．１　電池の構成
　２．２　効果
　２．３　変形例
３．第３の実施形態（組電池の例）
　３．１　組電池の構成
　３．２　変形例
４．第４の実施形態（電子機器の例）
　４．１　電子機器の構成
　４．２　変形例 Embodiments of the present technology will be described in the following order.
1. First embodiment (example of battery)
1.1 Battery Configuration 1.2 Deep Drawing Machine 1.3 Battery Manufacturing Method 1.4 Effects 1.5 Modifications Second Embodiment (Example of Battery)
2.1 Battery configuration 2.2 Effects 2.3 Modifications 3. Third embodiment (example of assembled battery)
3.1 Configuration of assembled battery 3.2 Modification 4 Fourth Embodiment (Example of Electronic Device)
4.1 Configuration of electronic device 4.2 Modification
＜１．第１の実施形態＞
［１．１　電池の構成］
　図１Ａ、図１Ｂ、図１Ｃは、本技術の第１の実施形態に係る電池の外観の一例を示す。図２は、本技術の第１の実施形態に係る電池の構成の一例を示す。本技術の第１の実施形態に係るフィルム外装型電池（以下単に「電池」という。）は、所謂リチウムイオン二次電池であり、略円柱状の巻回型電極体（以下単に「電極体」という。）１と、電極体１を収容する略円柱状の収容部２Ｗ、および収容部２Ｗの周囲のうち周面側にある折り返し部２Ｄを除く３方に設けられたシール部２Ｐ、２Ｑ、２Ｒを有するフィルム状の外装材２と、電極体１に接続された正極リード３および負極リード４とを備えている。 <1. First Embodiment>
[1.1 Battery configuration]
1A, 1B, and 1C show an example of the appearance of a battery according to the first embodiment of the present technology. FIG. 2 shows an example of the configuration of the battery according to the first embodiment of the present technology. The film-clad battery (hereinafter simply referred to as “battery”) according to the first embodiment of the present technology is a so-called lithium ion secondary battery, and is a substantially cylindrical wound electrode body (hereinafter simply referred to as “electrode body”). 1) Seal portions 2P, 2Q provided in three directions except for 1 and a substantially cylindrical housing portion 2W for housing the electrode body 1 and a folded portion 2D on the peripheral surface side of the periphery of the housing portion 2W. A film-shaped exterior member 2 having 2R, and a positive electrode lead 3 and a negative electrode lead 4 connected to the electrode body 1 are provided.
　シール部２Ｐ、２Ｑは収容部２Ｗの両端面側に設けられ、シール部２Ｒは収容部２Ｗの周面側に設けられている。シール部２Ｐ、２Ｑは、収容部２Ｗの略円形状の端面の中心からずれるととともに、その端面に対してほぼ垂直に立てて設けられている。 The seal portions 2P and 2Q are provided on both end surface sides of the accommodating portion 2W, and the seal portion 2R is provided on the peripheral surface side of the accommodating portion 2W. The seal portions 2P and 2Q are provided so as to deviate from the center of the substantially circular end surface of the accommodating portion 2W and stand substantially perpendicular to the end surface.
　シール部２Ｒは、図２Ａ、図２Ｃに示すように、収容部２Ｗの略円柱状の周面に対して略垂直に立てられていてもよいし、図３Ａ、図３Ｂに示すように、収容部２Ｗの略円柱状の周面に倣うように屈曲されていてもよいが、後者のように屈曲されていることが好ましい。電池の周面の形状をより円柱面に近い形状にすることができ、電池全体をより小型化できるからである。 As shown in FIGS. 2A and 2C, the seal portion 2R may be erected substantially perpendicular to the substantially cylindrical peripheral surface of the housing portion 2W, or as shown in FIGS. 3A and 3B. Although it may be bent so as to follow the substantially cylindrical peripheral surface of the portion 2W, it is preferably bent like the latter. This is because the shape of the peripheral surface of the battery can be made closer to a cylindrical surface, and the entire battery can be further downsized.
（正極、負極リード）
　正極リード３の一端は電極体１の正極に電気的に接続され、正極リード３の他端はシール部２Ｐを介して外装材２の外側に導出されている。また、負極リード４の一端は電極体１の負極に電気的に接続され、負極リード４の他端はシール部２Ｑを介して外装材２の外側に導出されている。 (Positive electrode, negative electrode lead)
One end of the positive electrode lead 3 is electrically connected to the positive electrode of the electrode body 1, and the other end of the positive electrode lead 3 is led out of the exterior material 2 through the seal portion 2P. One end of the negative electrode lead 4 is electrically connected to the negative electrode of the electrode body 1, and the other end of the negative electrode lead 4 is led out to the outside of the exterior material 2 through the seal portion 2Q.
　正極リード３と外装材２との間には、熱融着材などのシーラント材５Ａが設けられていることが好ましい。また、負極リード４と外装材２との間にも、熱融着材などのシーラント材５Ｂが設けられていることが好ましい。これにより、外装材２から導出される正極リード３および負極リード４と外装材２の内側面との接着性を向上させることができる。 It is preferable that a sealant material 5 </ b> A such as a heat sealing material is provided between the positive electrode lead 3 and the exterior material 2. Further, it is preferable that a sealant material 5 </ b> B such as a heat sealing material is provided between the negative electrode lead 4 and the exterior material 2. Thereby, the adhesiveness of the positive electrode lead 3 and the negative electrode lead 4 derived | led-out from the exterior material 2 and the inner surface of the exterior material 2 can be improved.
　なお、正極リード３と電極体１との接続位置、および負極リード４と電極体１との接続位置は、特に限定されるものではなく、電極体１の内周部、中周部および外周部のいずれであってもよい。正極リード３および負極リード４がともに電極体１の外周部に接続されている場合には、それらの接続位置は電極体１の周面において対向していることが好ましい。電極体１の周面の形状をより円柱面に近い形状とすることができるからである。 In addition, the connection position between the positive electrode lead 3 and the electrode body 1 and the connection position between the negative electrode lead 4 and the electrode body 1 are not particularly limited, and the inner peripheral portion, the middle peripheral portion, and the outer peripheral portion of the electrode body 1 are not limited. Any of these may be used. When both the positive electrode lead 3 and the negative electrode lead 4 are connected to the outer peripheral portion of the electrode body 1, it is preferable that the connection positions thereof face each other on the peripheral surface of the electrode body 1. This is because the shape of the peripheral surface of the electrode body 1 can be made closer to a cylindrical surface.
　正極リード３および負極リード４は、電極体１の端面に沿うようにＬ字状に屈曲されていることが好ましい。収容部２Ｗの容積効率を高めることができるからである。外装材２の外側に導出された正極リード３よび負極リード４は、真っ直ぐに伸びていてもよいし、収容部２Ｗの端面に向けて折り返されていてもよい。 The positive electrode lead 3 and the negative electrode lead 4 are preferably bent in an L shape along the end face of the electrode body 1. This is because the volumetric efficiency of the accommodating portion 2W can be increased. The positive electrode lead 3 and the negative electrode lead 4 led out to the outside of the exterior material 2 may extend straight or may be folded back toward the end surface of the housing portion 2W.
　正極リード３、負極リード４はそれぞれ、例えば、アルミニウム、銅、ニッケルまたはステンレスなどの金属材料により構成されており、薄板状または編目状などを有している。シーラント材５Ａ、５Ｂはそれぞれ、正極リード３、負極リード４に対して密着性を有す材料、例えば、ポリエチレン、ポリプロピレン、変性ポリエチレンまたは変性ポリプロピレンなどのポリオレフィン樹脂により構成されている。 Each of the positive electrode lead 3 and the negative electrode lead 4 is made of a metal material such as aluminum, copper, nickel, or stainless steel, and has a thin plate shape or a stitch shape. Each of the sealant materials 5A and 5B is made of a material having adhesion to the positive electrode lead 3 and the negative electrode lead 4, for example, a polyolefin resin such as polyethylene, polypropylene, modified polyethylene, or modified polypropylene.
（外装材）
　外装材２は、図２に示すように、同一方向に延設され、この延設の方向に直交する方向に並ぶ、深さが異なる２つの略部分円柱状の収容部２Ｘ、２Ｙと、この収容部２Ｘ、２Ｙの両端面側および周面側（側面側）の３方に設けられた周縁部２Ａ、２Ｂ、２Ｃとを有する。ここで、略部分円柱状とは、略円柱状の形状をその軸方向に切断して２分割した形状のことをいう。収容部２Ｘの略部分円柱状は、上記のように２分割された一方の形状であり、収容部２Ｙの略部分円柱状は、上記のように２分割された他方の形状である。 (Exterior material)
As shown in FIG. 2, the exterior material 2 extends in the same direction and is arranged in a direction perpendicular to the extending direction, and has two substantially partial cylindrical accommodating portions 2X and 2Y having different depths. It has peripheral portions 2A, 2B, and 2C provided on three sides of the both end surface sides and the peripheral surface side (side surface side) of the accommodating portions 2X and 2Y. Here, the substantially partial columnar shape means a shape obtained by cutting a substantially columnar shape in the axial direction and dividing it into two. The substantially partial cylindrical shape of the accommodating portion 2X is one shape divided into two as described above, and the substantially partial cylindrical shape of the accommodating portion 2Y is the other shape divided into two as described above.
　外装材２は、隣接する収容部２Ｘ、２Ｙ間の折り返し部２Ｄで折り返され、収容部２Ｘ、２Ｙの周縁部２Ａ、２Ｂ、２Ｃ同士が重ね合わされるとともに、収容部２Ｘ、２Ｙが組み合わされている。重ね合わされた周縁部２Ａ、２Ｂ、２Ｃ同士はそれぞれ熱融着などでシールされて、シール部２Ｐ、２Ｑ、２Ｒが形成されている。組み合わされた略部分円柱状の収容部２Ｘ、２Ｙにより略円柱状の収容部２Ｗが形成されている。 The exterior material 2 is folded at a folded portion 2D between the adjacent accommodating portions 2X and 2Y, and the peripheral portions 2A, 2B and 2C of the accommodating portions 2X and 2Y are overlapped with each other, and the accommodating portions 2X and 2Y are combined. Yes. The overlapped peripheral edge portions 2A, 2B, and 2C are sealed by heat fusion or the like, respectively, so that seal portions 2P, 2Q, and 2R are formed. A substantially cylindrical accommodating portion 2W is formed by the combined substantially cylindrical accommodating portions 2X and 2Y.
　折り返し部２Ｄは、図１Ｂ、図１Ｃに示すように、収容部２Ｗの周面に対して突出しないように設けられていることが好ましい。電池の周面の形状をより円柱面に近い形状にすることができるからである。ここで、上記“突出”から単なる外装材２の皺は除くものとする。シール部２Ｒは上述のように収容部２Ｗの略円柱状の周面に倣うように屈曲されていることが好ましいが、その場合、シール部２Ｒは収容部２Ｘの略部分円柱状の周面に倣うように屈曲されていてもよいし、収容部２Ｙの略部分円柱状の周面に倣うように屈曲されていてもよいが、より深さが浅い収容部２Ｙの略部分円柱状の周面に倣うように屈曲されていることが好ましい。 As shown in FIGS. 1B and 1C, the folded portion 2D is preferably provided so as not to protrude from the peripheral surface of the housing portion 2W. This is because the shape of the peripheral surface of the battery can be made closer to a cylindrical surface. Here, simple wrinkles of the exterior material 2 are excluded from the “protrusion”. As described above, the seal portion 2R is preferably bent so as to follow the substantially cylindrical peripheral surface of the accommodating portion 2W. In this case, the seal portion 2R is formed on the substantially partial cylindrical peripheral surface of the accommodating portion 2X. It may be bent so as to follow, or may be bent so as to follow the substantially partial cylindrical peripheral surface of the accommodating portion 2Y, but the substantially partial cylindrical peripheral surface of the accommodating portion 2Y having a shallower depth. It is preferable to be bent so as to follow.
　外装材２は、可塑性を有している。外装材２は、いわゆるラミネートフィルムであり、図４に示すように、金属層２１と、金属層２１の一方の面に設けられた表面保護層２２と、金属層２１の他方の面に設けられた熱融着層２３とを備える。外装材２は、必要に応じて、表面保護層２２と金属層２１の間、および熱融着層２３と金属層２１の間の一方または両方に接着層をさらに備えるようにしてもよい。なお、外装材２の両面のうち、表面保護層２２側の面が外側の面（以下「外装材２の外側面」という。）となり、熱融着層２３側の面が電極体１を収納する内側の面（以下「外装材２の内側面」という。）となる。 Exterior material 2 has plasticity. The exterior material 2 is a so-called laminate film, and is provided on the metal layer 21, the surface protective layer 22 provided on one surface of the metal layer 21, and the other surface of the metal layer 21, as shown in FIG. 4. And a heat-fusible layer 23. The packaging material 2 may further include an adhesive layer between one or both of the surface protective layer 22 and the metal layer 21 and between the heat fusion layer 23 and the metal layer 21 as necessary. Of the two surfaces of the exterior material 2, the surface on the surface protective layer 22 side is the outer surface (hereinafter referred to as “the outer surface of the exterior material 2”), and the surface on the heat-sealing layer 23 side accommodates the electrode body 1. The inner surface (hereinafter referred to as “the inner surface of the exterior material 2”).
　金属層２１は、水分などの進入を防ぎ、収納物である電極体１を保護する役割を担うものである。金属層２１の材料としては、例えば、アルミニウムまたはアルミニウム合金などからなる金属箔が用いられる。表面保護層２２の材料としては、強靱さや柔軟性などの観点から、例えば、ナイロンまたはポリエチレンテレフタレートなどが用いられる。熱融着層２３の材料としては、柔軟性および水分などの進入抑制の観点から、例えば、ポリエチレン、ポリプロピレン、変性ポリエチレンまたは変性ポリプロピレンなどのポリオレフィン系樹脂が用いられる。接着層の材料としては、例えば、アクリル系接着材、ポリエステル系接着材またはポリウレタン系接着材などが用いられる。なお、外装材２は、外観の美しさなどの観点から、有色層をさらに備えているか、または表面保護層２２、熱融着層２３および接着層の少なくとも一種の層に着色材を含んでいてもよい。 The metal layer 21 plays a role of preventing the entry of moisture or the like and protecting the electrode body 1 as a stored item. As a material of the metal layer 21, for example, a metal foil made of aluminum or an aluminum alloy is used. As a material of the surface protective layer 22, for example, nylon or polyethylene terephthalate is used from the viewpoint of toughness and flexibility. As a material of the heat-fusible layer 23, for example, a polyolefin resin such as polyethylene, polypropylene, modified polyethylene, or modified polypropylene is used from the viewpoint of flexibility and suppression of ingress of moisture and the like. As the material for the adhesive layer, for example, an acrylic adhesive, a polyester adhesive, or a polyurethane adhesive is used. In addition, the exterior material 2 is further provided with a colored layer from the viewpoint of the appearance and the like, or contains a coloring material in at least one of the surface protective layer 22, the thermal fusion layer 23, and the adhesive layer. Also good.
（電極体）
　電極体１は、それぞれ長尺の矩形状を有する正極と負極とセパレータとを有し、正極と負極とをセパレータを介して、その長手方向に巻回した巻回構造を有している。正極は、例えば、アルミニウムなどの金属箔を正極集電体とし、その両面に正極活物質を有する正極活物質層を備えるものである。負極は、例えば、銅などの金属箔を負極集電体とし、その両面に負極活物質を有する負極活物質層を備えるものである。なお、正極集電体および負極集電体の材料として、ニッケルまたはステンレスなども用いることができる。 (Electrode body)
The electrode body 1 includes a positive electrode, a negative electrode, and a separator each having a long rectangular shape, and has a winding structure in which the positive electrode and the negative electrode are wound in the longitudinal direction via the separator. The positive electrode includes, for example, a positive electrode active material layer having a positive electrode current collector made of a metal foil such as aluminum and having a positive electrode active material on both surfaces thereof. The negative electrode includes, for example, a negative electrode active material layer having a negative electrode current collector made of a metal foil such as copper and having a negative electrode active material on both surfaces thereof. Note that nickel, stainless steel, or the like can also be used as a material for the positive electrode current collector and the negative electrode current collector.
（正極活物質）
　正極活物質は、リチウムを吸蔵および放出することが可能な正極材料であり、例えば、リチウム酸化物、リチウムリン酸化物、リチウム硫化物またはリチウムを含む層間化合物などのリチウム含有化合物が適当であり、これらの２種以上を混合して用いてもよい。エネルギー密度を高くするには、リチウムと遷移金属元素と酸素とを有すリチウム含有化合物が好ましい。このようなリチウム含有化合としては、例えば、層状岩塩型構造を有するリチウム複合遷移金属酸化物、またはオリビン型構造を有するリチウム複合リン酸塩などが挙げられる。リチウム含有化合物としては、遷移金属元素として、コバルト、ニッケル、マンガン、または鉄からなる群のうち少なくとも１種を含むものが好ましい。リチウムを吸蔵および放出することが可能な正極材料としては、これらの他にも、ＭｎＯ2、Ｖ2Ｏ5、Ｖ6Ｏ13、ＮｉＳ、ＭｏＳなどのリチウムを含まない無機化合物も挙げられる。 (Positive electrode active material)
The positive electrode active material is a positive electrode material capable of inserting and extracting lithium, for example, a lithium-containing compound such as lithium oxide, lithium phosphorus oxide, lithium sulfide, or an intercalation compound containing lithium is suitable, Two or more of these may be mixed and used. In order to increase the energy density, a lithium-containing compound having lithium, a transition metal element, and oxygen is preferable. Examples of such lithium-containing compounds include lithium composite transition metal oxides having a layered rock salt structure or lithium composite phosphates having an olivine structure. The lithium-containing compound preferably contains at least one selected from the group consisting of cobalt, nickel, manganese, and iron as a transition metal element. In addition to these, positive electrode materials capable of inserting and extracting lithium include inorganic compounds not containing lithium, such as MnO 2 , V 2 O 5 , V 6 O 13 , NiS, and MoS.
（負極活物質）
　負極活物質は、リチウムを吸蔵および放出することが可能な負極材料であり、例えば、難黒鉛化性炭素、易黒鉛化性炭素、黒鉛、熱分解炭素類、コークス類、ガラス状炭素類、有機高分子化合物焼成体、炭素繊維、または活性炭などの炭素材料が挙げられる。黒鉛としては、球形化処理などを施した天然黒鉛、または略球状の人造黒鉛などを用いることが好ましい。人造黒鉛としては、メソカーボンマイクロビーズ（ＭＣＭＢ）を黒鉛化した人造黒鉛、コークス原料を黒鉛化、または粉砕した人造黒鉛などが好ましい。コークス類には、ピッチコークス、ニードルコークス、または石油コークスなどがある。有機高分子化合物焼成体とは、フェノール樹脂やフラン樹脂などの高分子材料を適当な温度で焼成して炭素化したものをいい、一部には難黒鉛化性炭素または易黒鉛化性炭素に分類されるものもある。この高分子材料としては、ポリアセチレンまたはポリピロールなどがある。これら炭素材料は、充放電時に生じる結晶構造の変化が非常に少なく、高い充放電容量を得ることができると共に、良好なサイクル特性を得ることができるので好ましい。 (Negative electrode active material)
The negative electrode active material is a negative electrode material capable of inserting and extracting lithium. For example, non-graphitizable carbon, graphitizable carbon, graphite, pyrolytic carbons, cokes, glassy carbons, organic Examples thereof include carbon materials such as a polymer compound fired body, carbon fiber, and activated carbon. As the graphite, it is preferable to use natural graphite subjected to spheroidizing treatment or the like, or substantially spherical artificial graphite. As the artificial graphite, artificial graphite obtained by graphitizing mesocarbon microbeads (MCMB), artificial graphite obtained by graphitizing or pulverizing a coke raw material, and the like are preferable. Examples of the cokes include pitch coke, needle coke, and petroleum coke. An organic polymer compound fired body is a carbonized material obtained by firing a polymer material such as phenol resin or furan resin at an appropriate temperature, and in part, it is made of non-graphitizable carbon or graphitizable carbon. Some are classified. Examples of the polymer material include polyacetylene and polypyrrole. These carbon materials are preferable because the change in crystal structure that occurs during charge and discharge is very small, a high charge and discharge capacity can be obtained, and good cycle characteristics can be obtained.
　また、リチウムを吸蔵および放出することが可能な負極材料として、金属元素および半金属元素のうちの少なくとも１種を構成元素として含む材料も挙げられる。この負極材料は金属元素または半金属元素の単体でも合金でも化合物でもよく、またこれらの混合体や複合体でもよい。またこれらは、固溶体、共昌体（共溶混合物）、金属間化合物またはこれら２種以上が共存するものでもよい。金属元素および半金属元素としては、例えば、マグネシウム、ホウ素、アルミニウム、ガリウム、インジウム、ケイ素、ゲルマニウム、スズ、鉛、ビスマス、カドミウム、銀、亜鉛、ハフニウム、ジルコニウム、イットリウム、パラジウム、白金などが挙げられる。これらは結晶質のものでもアモルファス（非晶質）のものでもよい。中でも、短周期型周期律表における４Ｂ族の金属元素または半金属元素を構成元素として含むものが好ましく、特にケイ素およびスズの少なくとも一方を構成元素として含むものが好ましい。ケイ素およびスズは、リチウムを吸蔵および放出する能力が大きく、高いエネルギー密度を得ることができるからである。 Also, examples of the negative electrode material capable of inserting and extracting lithium include a material containing at least one of a metal element and a metalloid element as a constituent element. This negative electrode material may be a single element, alloy, or compound of a metal element or metalloid element, or a mixture or composite thereof. In addition, these may be a solid solution, a commensal body (a mixed solution), an intermetallic compound, or a mixture of two or more of these. Examples of the metal element and metalloid element include magnesium, boron, aluminum, gallium, indium, silicon, germanium, tin, lead, bismuth, cadmium, silver, zinc, hafnium, zirconium, yttrium, palladium, platinum, and the like. . These may be crystalline or amorphous (amorphous). Among them, those containing a group 4B metal element or metalloid element in the short periodic table are preferable, and those containing at least one of silicon and tin as a constituent element are particularly preferable. This is because silicon and tin have a large ability to occlude and release lithium, and a high energy density can be obtained.
（セパレータ）
　セパレータは、正負極の接触による電流の短絡を防止しつつ、リチウムイオンを通過させるもので、例えば、ポリエチレン、ポリプロピレン、ポリテトラフルオロエチレン、これらの混合物もしくは共重合物などよりなる合成樹脂製の多孔質膜、またはセラミック製の多孔質膜であり、これらの２種以上の多孔質膜を積層したものであってもよい。中でもポリオレフィン製の多孔質膜は、短絡防止効果に優れ、かつ高温時のシャットダウン効果による電池の安全性向上を図ることができるので好ましく、特にポリエチレン製の多孔質膜が好ましい。 (Separator)
The separator allows lithium ions to pass through while preventing current short-circuiting due to contact between the positive and negative electrodes. For example, the separator is made of a synthetic resin made of polyethylene, polypropylene, polytetrafluoroethylene, a mixture or a copolymer thereof, and the like. It may be a porous film made of a porous film or ceramic, and may be a laminate of these two or more porous films. Among them, a polyolefin porous film is preferable because it is excellent in short-circuit prevention effect and can improve battery safety due to a shutdown effect at high temperatures, and a polyethylene porous film is particularly preferable.
（電解液）
　電極体１は、非水電解液を含んでいる。なお、非水電解液とこれを保持する高分子化合物とを含む電解質層をセパレータと共に正負極間に備えるようにしてもよい。この場合、電解質層をセパレータの代わりとし、セパレータを備えないようにしてもよい。
非水電解液は、溶媒と電解質塩とを含んでいる。なお、電池特性を向上するために、非水電解液が、公知の添加剤をさらに含むようにしてもよい。 (Electrolyte)
The electrode body 1 contains a non-aqueous electrolyte. Note that an electrolyte layer containing a nonaqueous electrolytic solution and a polymer compound that holds the nonaqueous electrolytic solution may be provided between the positive and negative electrodes together with the separator. In this case, the electrolyte layer may be used in place of the separator, and no separator may be provided.
The nonaqueous electrolytic solution includes a solvent and an electrolyte salt. In order to improve battery characteristics, the non-aqueous electrolyte may further contain a known additive.
　溶媒としては、例えば、炭酸エチレン、炭酸プロピレン、炭酸ブチレン、炭酸ビニレン、炭酸ジメチル、炭酸ジエチル、炭酸エチルメチル、４－フルオロ－１，３-ジオキソラン－２－オン、γ－ブトロラクトン、γ－バレロラクトン、１，２－ジメトキシエタン、テトラヒドロフラン、２－メチルテトラヒドロフラン、１，３－ジオキソラン、４－メチル－１，３－ジオキソラン、酢酸メチル、酢酸エチル、プロピオン酸メチル、プロピオン酸エチル、プロピオン酸プロピル、アセトニトリル、スクシノニトリル、アジポニトリル、メトキシアセトニトリル、３－メトキシピロピオニトリル、Ｎ，Ｎ－ジメチルフォルムアミド、Ｎ－メチルピロリジノン、Ｎ－メチルオキサゾリシノン、ニトロメタン、ニトロエタン、スルホラン、ジメチルスルフォキシド、リン酸トリメチル、リン酸トリエチル、エチレンスルフィドなどが挙げられる。中でも、４－フルオロ－１，３-ジオキソラン－２－オン、炭酸エチレン、炭酸プロピレン、炭酸ビニレン、炭酸ジメチルおよび炭酸エチルメチルなどからなる群のうちの少なくとも1種を混合して用いるようにすれば、優れた充放電容量特性および充放電サイクル特性を得ることができるので好ましい。 Examples of the solvent include ethylene carbonate, propylene carbonate, butylene carbonate, vinylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, 4-fluoro-1,3-dioxolan-2-one, γ-butrolactone, and γ-valerolactone. 1,2-dimethoxyethane, tetrahydrofuran, 2-methyltetrahydrofuran, 1,3-dioxolane, 4-methyl-1,3-dioxolane, methyl acetate, ethyl acetate, methyl propionate, ethyl propionate, propyl propionate, acetonitrile , Succinonitrile, adiponitrile, methoxyacetonitrile, 3-methoxypyrrolopionitrile, N, N-dimethylformamide, N-methylpyrrolidinone, N-methyloxazolicinone, nitromethane, nitroethane, sulfolane, dimethyl Rufokishido, trimethyl phosphate, triethyl phosphate, and ethylene sulfide and the like. Among them, if a mixture of at least one member selected from the group consisting of 4-fluoro-1,3-dioxolan-2-one, ethylene carbonate, propylene carbonate, vinylene carbonate, dimethyl carbonate, and ethyl methyl carbonate is used. It is preferable because excellent charge / discharge capacity characteristics and charge / discharge cycle characteristics can be obtained.
　電解質塩は、１種または２種以上のリチウム塩を含んでいる。リチウム塩としては、例えば、六フッ化リン酸リチウム、四フッ化ホウ酸リチウム、六フッ化ヒ酸リチウム、過塩素酸リチウム、トリフルオロメタンスルホン酸リチウム、ビス（トリフルオロメタンスルホニル）イミドリチウム、ビス（ペンタフルオロエタンスルホニル）イミドリチウム、トリス（トリフルオロメタンスルホニル）メチルリチウム、塩化リチウム、臭化リチウムなどが挙げられる。 The electrolyte salt contains one or more lithium salts. Examples of lithium salts include lithium hexafluorophosphate, lithium tetrafluoroborate, lithium hexafluoroarsenate, lithium perchlorate, lithium trifluoromethanesulfonate, lithium bis (trifluoromethanesulfonyl) imide, bis ( Examples include pentafluoroethanesulfonyl) imido lithium, tris (trifluoromethanesulfonyl) methyl lithium, lithium chloride, lithium bromide and the like.
　高分子化合物としては、例えば、ポリアクリロニトリル、ポリフッ化ビニリデン、フッ化ビニリデンとヘキサフルオロプロピレンとの共重合体、ポリテトラフルオロエチレン、ポリヘキサフルオロプロピレン、ポリエチレンオキシド、ポリプロピレンオキシド、ポリフォスファゼン、ポリシロキサン、ポリ酢酸ビニル、ポリビニルアルコール、ポリアクリル酸、ポリメタクリル酸、ポリメタクリル酸メチル、スチレン－ブタジエンゴム、ニトリル－ブタジエンゴム、ポリスチレンまたはポリカーボネートなどが挙げられる。特に、電気化学的な安定性の観点から、ポリアクリロニトリル、ポリフッ化ビニリデン、ポリヘキサフルオロプロピレンまたはポリエチレンオキシドが好ましい。 Examples of the polymer compound include polyacrylonitrile, polyvinylidene fluoride, a copolymer of vinylidene fluoride and hexafluoropropylene, polytetrafluoroethylene, polyhexafluoropropylene, polyethylene oxide, polypropylene oxide, polyphosphazene, and polysiloxane. , Polyvinyl acetate, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, polymethyl methacrylate, styrene-butadiene rubber, nitrile-butadiene rubber, polystyrene or polycarbonate. In particular, from the viewpoint of electrochemical stability, polyacrylonitrile, polyvinylidene fluoride, polyhexafluoropropylene, or polyethylene oxide is preferable.
［１．２　深絞り加工装置］
　以下、図５を参照して、本技術の第１の実施形態に係る電池の製造に用いられる深絞り加工装置の構成の一例について説明する。 [1.2 Deep drawing processing equipment]
Hereinafter, with reference to FIG. 5, an example of the configuration of the deep drawing apparatus used for manufacturing the battery according to the first embodiment of the present technology will be described.
　深絞り加工装置は、パンチ３１と、パンチ３１を押し込む孔部４１Ａを有するダイ４１とを備える。パンチ３１は、孔部４１Ａに押し込み、および孔部４１Ａから抜き出し可能に図示を省略した駆動部に保持されている。パンチ３１は、同一方向に延設され、この延設の方向に直交する方向に並ぶ、高さが異なる２つの略部分円柱状のエンボス成形部（以下単に「成形部」という。）３２、３３を有している。 The deep drawing apparatus includes a punch 31 and a die 41 having a hole 41A into which the punch 31 is pushed. The punch 31 is held by a drive unit (not shown) so that it can be pushed into the hole 41A and extracted from the hole 41A. The punch 31 extends in the same direction, and is arranged in a direction orthogonal to the extending direction, and has two substantially partial cylindrical embossed portions (hereinafter simply referred to as “molded portions”) 32 and 33 having different heights. have.
　パンチ３１の成形部３２、３３は、以下の式（１ａ）～（３ａ）の関係を満たすように構成されている。
　ｄ１＞ｄ２　・・・（１ａ）
（但し、式（１ａ）中、ｄ１、ｄ２はそれぞれ、成形部３２、３３の高さである。）
　ｒ１＝ｒ２　・・・（２ａ）
（但し、式（２ａ）中、ｒ１、ｒ２はそれぞれ、成形部３２、３３の半径である。）
　ｗ１＝ｗ２　・・・（３ａ）
（但し、式（３ａ）中、ｗ１、ｗ２はそれぞれ、成形部３２、３３の幅である。） The forming portions 32 and 33 of the punch 31 are configured to satisfy the relationships of the following formulas (1a) to (3a).
d1> d2 (1a)
(However, in the formula (1a), d1 and d2 are the heights of the molding parts 32 and 33, respectively.)
r1 = r2 (2a)
(However, in formula (2a), r1 and r2 are the radii of the molding parts 32 and 33, respectively.)
w1 = w2 (3a)
(However, in formula (3a), w1 and w2 are the widths of the molding parts 32 and 33, respectively.)
　パンチ３１の成形部３２、３３は、以下の式（１ｂ）～（３ｂ）の関係を満たすように構成されていてもよい。
　ｄ１＞ｄ２　・・・（１ｂ）
　ｒ１＞ｒ２　・・・（２ｂ）
　ｗ１＞ｗ２　・・・（３ｂ） The forming portions 32 and 33 of the punch 31 may be configured to satisfy the relationships of the following formulas (1b) to (3b).
d1> d2 (1b)
r1> r2 (2b)
w1> w2 (3b)
　ダイ４１は、外装材２を載置する載置面４２Ｂを有する下ダイ（下型）４２と、下ダイ４２に載置された外装材２のしわを押える押え面４３Ｂを有する上ダイ（上型）４３とを備え、下ダイ４２と上ダイ４３との間に外装材２を挟持可能な構成を有している。下ダイ４２、上ダイ４３はそれぞれ貫通孔である孔部４２Ａ、４３Ａを有し、孔部４２Ａ、４３Ａが重ね合わされることにより孔部４１Ａが構成される。 The die 41 includes a lower die (lower mold) 42 having a mounting surface 42B on which the outer packaging material 2 is placed, and an upper die (upper die) having a pressing surface 43B for pressing wrinkles of the outer packaging material 2 placed on the lower die 42. Mold) 43, and has a configuration capable of sandwiching the exterior material 2 between the lower die 42 and the upper die 43. The lower die 42 and the upper die 43 respectively have hole portions 42A and 43A that are through holes, and the hole portions 41A are configured by overlapping the hole portions 42A and 43A.
　下ダイ４２は、パンチ３１により変形された外装材２を、成形部３２、３３の間の境界部３４において支持する板状の支持部材４４を有していることが好ましい。支持部材４４は、その頂部が境界部３４に対向するように孔部４２Ａの中央部に設けられる。このような構成を有する支持部材４４を採用することで、収容部２Ｘ、２Ｙ間の距離を小さくできるので、外装材２の折り返し部２Ｄが収容部２Ｗの周面に対して突出しない状態で、外装材２により電極体１を封止することができる。したがって、収容部２Ｗをより円柱状に近い形状にすることができる。 The lower die 42 preferably has a plate-like support member 44 that supports the exterior material 2 deformed by the punch 31 at the boundary portion 34 between the molding portions 32 and 33. The support member 44 is provided at the center of the hole 42 </ b> A so that the top thereof faces the boundary 34. By adopting the support member 44 having such a configuration, the distance between the accommodating portions 2X and 2Y can be reduced, so that the folded portion 2D of the exterior material 2 does not protrude from the peripheral surface of the accommodating portion 2W. The electrode body 1 can be sealed with the exterior material 2. Therefore, the accommodating part 2W can be made into a shape closer to a cylindrical shape.
　境界部３４に対向する支持部材４４の頂部（先端部）は、下ダイ４２の載置面４２Ｂを基準にしてパンチ３１の押圧の方向（押し込み方向）にずれた位置、より具体的には下ダイ４２の載置面４２Ｂより（内側の）低い位置にあることが好ましい。パンチ３１の押し込み方向における、支持部材４４の頂部と下ダイ４２の載置面４２Ｂとの位置の差は、支持部材４４の厚みの半分以上、外装材２の厚みの１０倍以下であることが好ましい。収容部２Ｗをより円柱状に近い形状にすることができるからである。 The top portion (tip portion) of the support member 44 facing the boundary portion 34 is shifted in the pressing direction (pressing direction) of the punch 31 with respect to the mounting surface 42B of the lower die 42, more specifically, the lower portion. It is preferable to be at a position (inside) lower than the mounting surface 42B of the die 42. The difference in position between the top of the support member 44 and the mounting surface 42B of the lower die 42 in the direction in which the punch 31 is pushed in may be not less than half the thickness of the support member 44 and not more than 10 times the thickness of the exterior material 2. preferable. This is because the accommodating portion 2W can be made to have a shape closer to a columnar shape.
［１．３　電池の製造方法］
　以下、図５、図６Ａ～図６Ｄ、図７Ａ～図７Ｃを参照して、本技術の第１の実施形態に係る電池の製造方法の一例について説明する。 [1.3 Battery Manufacturing Method]
Hereinafter, an example of a method for manufacturing a battery according to the first embodiment of the present technology will be described with reference to FIGS. 5, 6A to 6D, and 7A to 7C.
（外装材の成形工程）
　図５に示した深絞り加工装置を用いて、以下のようにしてエンボス加工により外装材２を成形する。まず、下ダイ４２の載置面４２Ｂと上ダイ４３の押え面４３Ｂとで外装材２を挟持する。次に、パンチ３１を下降させて孔部４１Ａに押し込み、成形部３２、３３により外装材２の内側面（第１面）を押圧するとともに、境界部３４の位置において外装材２の外側面（第２面）を支持部材４４により支持しつつ、外装材２を変形させる。成形部３２、３３が所定の深さまでに押し込まれたら、パンチ３１を上昇させて孔部４１Ａから抜き出す。これにより、図６Ａに示すように、外装材２に収容部２Ｘ、２Ｙが形成される。 (Exterior material molding process)
The exterior member 2 is formed by embossing as follows using the deep drawing apparatus shown in FIG. First, the exterior material 2 is sandwiched between the mounting surface 42 </ b> B of the lower die 42 and the pressing surface 43 </ b> B of the upper die 43. Next, the punch 31 is lowered and pushed into the hole 41 </ b> A, the inner surface (first surface) of the exterior material 2 is pressed by the molding portions 32 and 33, and the outer surface of the exterior material 2 (at the position of the boundary portion 34). The exterior material 2 is deformed while the second surface is supported by the support member 44. When the molding parts 32 and 33 are pushed to a predetermined depth, the punch 31 is raised and extracted from the hole 41A. Thereby, as shown in FIG. 6A, the accommodating portions 2 </ b> X and 2 </ b> Y are formed in the exterior material 2.
　上記“外装材の成形工程”において、収容部２Ｘ、２Ｙは、上記の式（１ａ）～（３ａ）の関係を満たすパンチ３１を用いて、以下の式（１Ａ）～（３Ａ）の関係を満たすように成形される。
　Ｄ１＞Ｄ２　・・・（１Ａ）
（但し、式（１Ａ）中、Ｄ１、Ｄ２はそれぞれ、周縁部２Ａ、２Ｂ、２Ｃの内側面を基準にした収容部２Ｘ、２Ｙの深さである。）
　Ｒ１＝Ｒ２　・・・（２Ａ）
（但し、式（２Ａ）中、Ｒ１、Ｒ２はそれぞれ、収容部２Ｘ、２Ｙの半径である。）
　Ｗ１＝Ｗ２　・・・（３Ａ）
（但し、式（３Ａ）中、Ｗ１、Ｗ２はそれぞれ、収容部２Ｘ、２Ｙの幅である。） In the “exterior material molding step”, the accommodating portions 2X and 2Y use the punches 31 satisfying the relations of the above formulas (1a) to (3a) to satisfy the relations of the following formulas (1A) to (3A). Molded to fill.
D1> D2 (1A)
(However, in the formula (1A), D1 and D2 are the depths of the accommodating portions 2X and 2Y with reference to the inner surfaces of the peripheral portions 2A, 2B, and 2C, respectively.)
R1 = R2 (2A)
(However, in the formula (2A), R1 and R2 are radii of the accommodating portions 2X and 2Y, respectively.)
W1 = W2 (3A)
(However, in Formula (3A), W1 and W2 are the widths of the accommodating portions 2X and 2Y, respectively.)
　上記“外装材の成形工程”において、収容部２Ｘ、２Ｙは、上記の式（１ｂ）～（３ｂ）の関係を満たすパンチ３１を用いて、以下の式（１Ｂ）～（３Ｂ）の関係を満たすように成形されてもよい。
　Ｄ１＞Ｄ２　・・・（１Ｂ）
　Ｒ１＞Ｒ２　・・・（２Ｂ）
　Ｗ１＞Ｗ２　・・・（３Ｂ） In the “exterior material molding step”, the accommodating portions 2X and 2Y use the punches 31 satisfying the relations of the above formulas (1b) to (3b) to satisfy the relations of the following formulas (1B) to (3B). You may shape | mold so that it may satisfy | fill.
D1> D2 (1B)
R1> R2 (2B)
W1> W2 (3B)
　上記“外装材の成形工程”において、パンチ３１の境界部３４および支持部材４４の頂部の幅が狭いことが好ましい。これにより、収容部２Ｘ、２Ｙ間の距離を小さくできるので、外装材２の折り返し部２Ｄが収容部２Ｗの周面に対して突出しない状態で、外装材２により電極体１を封止することができる。したがって、収容部２Ｗをより円柱状に近い形状にすることができる。 It is preferable that the width of the boundary portion 34 of the punch 31 and the top portion of the support member 44 is narrow in the “molding step of the exterior material”. Thereby, since the distance between the accommodating portions 2X and 2Y can be reduced, the electrode body 1 is sealed by the exterior material 2 in a state where the folded portion 2D of the exterior material 2 does not protrude from the peripheral surface of the accommodation portion 2W. Can do. Therefore, the accommodating part 2W can be made into a shape closer to a cylindrical shape.
（電極体の封止工程）
　以下のようにして、収容部２Ｗの周囲のうち周面側にある折り返し部２Ｄを除く３方をシールして、電極体１を外装材２により封止する。まず、図６Ｂに示すように、収容部２Ｘ、２Ｙのうち、より深さの深い収容部２Ｘに、正極リード３および負極リード４が取り付けられた電極体１を収納する。次に、図６Ｃに示すように、収容部２Ｘ、２Ｙ間の折り返し部２Ｄで外装材２を折り返し、図６Ｄに示すように、収容部２Ｘ、２Ｙの周囲のうち両端面側および周面側（側面側）の３方を囲む周縁部２Ａ、２Ｂ、２Ｃ同士を重ね合わせるとともに、収容部２Ｘ、２Ｙを組み合わせることにより、収容部２Ｗを形成する。この際、正極リード３と外装材２との間にはシーラント材５Ａが配置されているとともに、負極リード４と外装材２との間にはシーラント材５Ｂが配置されていることが好ましい。 (Electrode body sealing process)
As described below, the electrode body 1 is sealed with the exterior material 2 by sealing three sides of the periphery of the accommodating portion 2W except the folded portion 2D on the peripheral surface side. First, as shown in FIG. 6B, the electrode body 1 to which the positive electrode lead 3 and the negative electrode lead 4 are attached is accommodated in the accommodating portion 2X having a deeper depth among the accommodating portions 2X and 2Y. Next, as shown in FIG. 6C, the exterior material 2 is folded at the folded portion 2D between the housing portions 2X and 2Y, and as shown in FIG. 6D, both end surfaces and the circumferential surface side of the periphery of the housing portions 2X and 2Y. The peripheral portions 2A, 2B, and 2C surrounding the three sides (side surface side) are overlapped with each other, and the accommodating portion 2W is formed by combining the accommodating portions 2X and 2Y. At this time, it is preferable that a sealant material 5 </ b> A is disposed between the positive electrode lead 3 and the exterior material 2, and a sealant material 5 </ b> B is disposed between the negative electrode lead 4 and the exterior material 2.
　次に、図７Ａに示すように、収容部２Ｗの両端面側で重ね合わされた周縁部２Ａ、２Ｂ同士を熱融着などでシールすることにより、収容部２Ｗの両端面側にシール部２Ｐ、２Ｑを形成し、収容部２Ｗの周面側に開口部２Ｓを形成する（図６Ｄ参照）。以下では、このような状態の外装材２に収容された電極体１を電池前駆体という。 Next, as shown in FIG. 7A, the peripheral portions 2A and 2B overlapped on both end surfaces of the accommodating portion 2W are sealed by heat-sealing or the like, so that the sealing portions 2P, 2Q is formed, and the opening 2S is formed on the peripheral surface side of the accommodating portion 2W (see FIG. 6D). Below, the electrode body 1 accommodated in the exterior material 2 in such a state is referred to as a battery precursor.
　次に、図７Ｂに示しように、金型５１、５２の凹部５１Ａ、５２Ａにより電池前駆体を保持する。凹部５１Ａ、５２Ａは、収容部２Ｘ、収容部２Ｙと略同様の半径を有する略部分円柱状を有している。次に、金型５１、５２により保持された電池前駆体を、図示しない真空槽内に搬送し、所定位置に固定する。 Next, as shown in FIG. 7B, the battery precursor is held by the recesses 51 </ b> A and 52 </ b> A of the molds 51 and 52. The recesses 51A and 52A have a substantially partial columnar shape having substantially the same radius as the housing portion 2X and the housing portion 2Y. Next, the battery precursor held by the molds 51 and 52 is conveyed into a vacuum chamber (not shown) and fixed at a predetermined position.
　次に、真空槽内を脱気しながら、真空槽内に備えられた加熱手段としてのヒートブロック５３、５４により開口部２Ｓ（すなわち周縁部２Ｃ、２Ｃ）をその両面側から挟むようにして、開口部２Ｓを熱融着などでシールしてシール部２Ｒを形成する。これにより、外装材２内を脱気しながらシール部２Ｒを形成できる。このシール部２Ｒの形成の際に、ヒートブロック５３、５４により開口部２Ｓをその両面側から挟むことで外装材２に張力を加え、電極体１に外装材２を密着させて、収容部２Ｗの周面に対して折り返し部２Ｄが突出しないようにすることが好ましい。電極体１に対する外装材２の密着性を高めて、収容部２Ｗをより円柱状に近い形状にすることができるからである。 Next, while degassing the inside of the vacuum chamber, the opening 2S (that is, the peripheral portions 2C and 2C) is sandwiched from both sides by the heat blocks 53 and 54 as heating means provided in the vacuum chamber, so that the opening 2S is sealed by heat sealing or the like to form a seal portion 2R. Thereby, the seal | sticker part 2R can be formed, deaerating the exterior material 2 inside. When forming the seal portion 2R, the opening 2S is sandwiched from both sides by the heat blocks 53 and 54 to apply tension to the exterior material 2 so that the exterior material 2 is brought into close contact with the electrode body 1 and the accommodating portion 2W. It is preferable that the folded portion 2D does not protrude from the peripheral surface. This is because the adhesion of the exterior material 2 to the electrode body 1 can be improved, and the housing portion 2W can be made to have a shape closer to a columnar shape.
　次に、必要に応じて、シール部２Ｒをカットして、所定幅残した後、図７Ｃに示すように、シール部２Ｒが収容部２Ｗの周面に倣うように、シール部２Ｒと収容部２Ｗの周面とを熱融着などにより貼りあわせてシール部２Ｒを固定するようにしてもよい。このようにシール部２Ｒを固定することで、電池の周面をより円柱面に近い形状とし、電池全体をより小型化できる。 Next, if necessary, after cutting the seal portion 2R to leave a predetermined width, as shown in FIG. 7C, the seal portion 2R and the storage portion are arranged so that the seal portion 2R follows the peripheral surface of the storage portion 2W. The seal portion 2 </ b> R may be fixed by pasting the 2 W peripheral surface by heat sealing or the like. By fixing the seal portion 2R in this way, the peripheral surface of the battery can be made closer to a cylindrical surface, and the entire battery can be further downsized.
［１．４　効果］
　第１の実施形態に係る電池では、収容部２Ｗの端面に略垂直に立てられたシール部２Ｐ、２Ｑが収容部２Ｗの端面の中心からずれて設けられているので、収容部２Ｗの端面における収容空間を広くすることができる。したがって、回路部材を含めた構成を考えたとき、電池全体としての容積効率を向上することができる。よって、携帯機器やウエアラブル機器などに適用して好適な電池を提供できる。ここで、収容部２Ｗの端面における収容空間とは、収容部２Ｘの一方の端面をその位置からシール部２Ｐの先端位置まで仮想的に延長することにより形成される略部分円柱状の空間のことを意味する。 [1.4 Effect]
In the battery according to the first embodiment, the seal portions 2P and 2Q that are erected substantially perpendicular to the end surface of the housing portion 2W are provided so as to be shifted from the center of the end surface of the housing portion 2W. The accommodation space can be widened. Therefore, when considering the configuration including the circuit member, the volume efficiency of the entire battery can be improved. Therefore, it is possible to provide a battery suitable for application to a portable device, a wearable device, or the like. Here, the accommodation space in the end surface of the accommodating portion 2W is a substantially partial cylindrical space formed by virtually extending one end surface of the accommodating portion 2X from the position to the tip position of the seal portion 2P. Means.
　外装材２を折り返し部２Ｄで折り返して、折り返された外装材２により電極体１を封止するので、電極体１の周面側に設けられるシール部２Ｒを１箇所とすることができる。したがって、電池の容積効率を向上できる。 Since the exterior material 2 is folded back by the folded portion 2D and the electrode body 1 is sealed by the folded exterior material 2, the seal portion 2R provided on the peripheral surface side of the electrode body 1 can be provided at one place. Therefore, the volumetric efficiency of the battery can be improved.
　シール部２Ｒが収容部２Ｗの略円柱状の周面に倣うように設けられ、かつ折り返し部２Ｄが収容部２Ｗの周面に対して突出せずに設けられている場合には、電池の周面をより円柱面に近い形状とすることができる。したがって、電池の容積効率をさらに向上できる。 When the seal portion 2R is provided so as to follow the substantially cylindrical peripheral surface of the storage portion 2W, and the folded portion 2D is provided without protruding from the peripheral surface of the storage portion 2W, the periphery of the battery The surface can be made a shape closer to a cylindrical surface. Therefore, the volumetric efficiency of the battery can be further improved.
［１．５　変形例］
　下ダイ４２は、図５に示した孔部４２Ａおよび支持部材４４に代えて、図８に示すように、同一方向に延設され、この延設の方向に直交する方向に並ぶ、深さが異なる２つの略部分円柱状の凹部４５、４６を有していてもよい。凹部４５、４６の略部分円柱状はそれぞれ、成形部３２、３３の略部分円柱状とほぼ同様の形状である。成形部３２、３３を外装材２の内側面を押して外装材２を変形させて、成形部３２、３３と凹部４５、４６とで外装材２を挟むことで、外装材２に収容部２Ｘ、２Ｙが形成される。この場合、収容部２Ｘ、２Ｙの形状のバラツキを抑制することができる。 [1.5 Modification]
The lower die 42 extends in the same direction as shown in FIG. 8 in place of the hole 42A and the support member 44 shown in FIG. 5, and is arranged in a direction perpendicular to the extending direction. Two different substantially cylindrical recesses 45 and 46 may be provided. The substantially partial columnar shapes of the recesses 45 and 46 are substantially the same shape as the substantially partial columnar shapes of the molding portions 32 and 33, respectively. The molding parts 32 and 33 are pressed against the inner surface of the exterior material 2 to deform the exterior material 2, and the exterior material 2 is sandwiched between the molding parts 32 and 33 and the recesses 45 and 46. 2Y is formed. In this case, variation in the shape of the housing portions 2X and 2Y can be suppressed.
　第１の実施形態に係る電池の製造方法では、金型５１、５２により保持された電池前駆体を真空槽内に搬送する場合を例として説明したが、金型５１、５２が予め真空槽内に備えられ、これらの金型５１、５２まで電池前駆体を搬送するようにしてもよい。 In the battery manufacturing method according to the first embodiment, the case where the battery precursor held by the molds 51 and 52 is transported into the vacuum chamber has been described as an example. However, the molds 51 and 52 are previously stored in the vacuum chamber. The battery precursor may be transported to the molds 51 and 52.
＜２　第２の実施形態＞
［２．１　電池］
　本技術の第２の実施形態に係る電池は、図９Ａ、図９Ｂに示すように、収容部２Ｗの一方の端面のシール部２Ｐ上に配置されたプリント基板６および回路素子７を備えている。プリント基板６および回路素子７は、回路部材の一例であり、収容部２Ｘ、２Ｙの端面のうち、より面積が広い収容部２Ｘの端面側の収容空間に配置されている。収容部２Ｗの他方の端面側に設けられたシール部２Ｑは、図９Ｃに示すように、端面の中心側に向けて折り曲げられ、端面と略平行となっている。 <2 Second Embodiment>
[2.1 Battery]
As shown in FIGS. 9A and 9B, the battery according to the second embodiment of the present technology includes a printed circuit board 6 and a circuit element 7 arranged on the seal portion 2P on one end face of the housing portion 2W. . The printed circuit board 6 and the circuit element 7 are examples of circuit members, and are arranged in the accommodation space on the end face side of the accommodating portion 2X having a larger area among the end surfaces of the accommodating portions 2X and 2Y. As shown in FIG. 9C, the seal portion 2Q provided on the other end surface side of the housing portion 2W is bent toward the center side of the end surface and is substantially parallel to the end surface.
　プリント基板６および回路素子７の一方または両方は、収容部２Ｗの一方の端面に垂直な方向から見ると、その端面の外周の内側に位置していることが好ましい。回路部材を含めた電池全体の容積効率をさらに向上できるからである。プリント基板６および回路素子７の一方または両方は、収容部２Ｗの一方の端面に対して略平行または略垂直に設けられていることが好ましい。上述のようにプリント基板６および回路素子７の一方または両方を端面の外周の内側に位置しやすいからである。 One or both of the printed circuit board 6 and the circuit element 7 are preferably located inside the outer periphery of the end face when viewed from a direction perpendicular to the one end face of the housing portion 2W. This is because the volume efficiency of the entire battery including the circuit member can be further improved. One or both of the printed circuit board 6 and the circuit element 7 are preferably provided substantially parallel or substantially perpendicular to one end face of the accommodating portion 2W. This is because one or both of the printed circuit board 6 and the circuit element 7 are easily located inside the outer periphery of the end face as described above.
　収容部２Ｗの一方の端面側から導出された正極リード３は収容部２Ｗの一方の端面に向けて折り返され、折り返された部分がプリント基板６に電気的に接続されている。収容部２Ｗの他方の端面側から導出された負極リード４は、板状または線状の接続部材４Ａを介してプリント基板６に電気的に接続されている。 The positive electrode lead 3 led out from one end surface side of the housing portion 2W is folded back toward one end surface of the housing portion 2W, and the folded portion is electrically connected to the printed circuit board 6. The negative electrode lead 4 led out from the other end face side of the housing portion 2W is electrically connected to the printed circuit board 6 via a plate-like or linear connection member 4A.
（プリント基板）
　プリント基板６はＬ字状に屈曲されており、収容部２Ｘの端面とシール部２Ｐとに沿うようにシール部２Ｐ上に配置されている。プリント基板は、外部機器と接続するための、図示を省略した正極端子および負極端子を有している。プリント基板の種類は特に限定されるものではなく、リジッド基板、フレキシブル基板およびリジッドフレキシブル基板のいずれであってもよい。 (Printed board)
The printed circuit board 6 is bent in an L shape, and is disposed on the seal portion 2P so as to follow the end surface of the accommodating portion 2X and the seal portion 2P. The printed circuit board has a positive electrode terminal and a negative electrode terminal (not shown) for connecting to an external device. The type of the printed board is not particularly limited, and may be any of a rigid board, a flexible board, and a rigid flexible board.
（回路素子）
　回路素子７は、シール部２Ｐ上に配置されたプリント基板６に実装されている。回路素子７は、保護回路および電圧検出回路などを有し、プリント基板６を介して正極リード３および負極リード４に電気的に接続されている。 (Circuit element)
The circuit element 7 is mounted on the printed circuit board 6 disposed on the seal portion 2P. The circuit element 7 includes a protection circuit, a voltage detection circuit, and the like, and is electrically connected to the positive electrode lead 3 and the negative electrode lead 4 via the printed circuit board 6.
［２．２　効果］
　第２の実施形態に係る電池では、収容部２Ｗの端面に略垂直に立てられたシール部２Ｐが収容部２Ｗの端面の中心からずれて設けられているので、収容部２Ｗの端面において回路素子７およびプリント基板６を配置する収容空間を広くすることができる。したがって、プリント基板６および回路素子７の構成の自由度が向上し、かつ回路部材を含めた電池全体の容積効率を向上することができる。 [2.2 Effects]
In the battery according to the second embodiment, since the seal portion 2P standing substantially perpendicular to the end surface of the housing portion 2W is provided so as to be shifted from the center of the end surface of the housing portion 2W, a circuit element is provided at the end surface of the housing portion 2W. 7 and the accommodating space for arranging the printed circuit board 6 can be widened. Therefore, the freedom degree of the structure of the printed circuit board 6 and the circuit element 7 improves, and the volumetric efficiency of the whole battery including a circuit member can be improved.
　第２の実施形態に係る電池では、図９Ｂに示すように、シール部２Ｐが収容部２Ｗの略円形状の端面の中心からずれているので、回路素子７を配置する収容空間を広くすることができる。このため、回路素子７を含めた電池の長さを短くでき、回路部材を含めた電池全体の容積効率が向上する。一方、図１０に示すように、シール部２Ｐが収容部２Ｗの略円形状の端面の中心に設けられている電池では、回路素子７を配置する収容空間が狭くなる。このため、回路素子７を含めた電池の長さが長くなり、回路部材を含めた電池全体の容積効率が低下する。 In the battery according to the second embodiment, as shown in FIG. 9B, since the seal portion 2P is displaced from the center of the substantially circular end surface of the storage portion 2W, the storage space in which the circuit element 7 is disposed is widened. Can do. For this reason, the length of the battery including the circuit element 7 can be shortened, and the volume efficiency of the entire battery including the circuit member is improved. On the other hand, as shown in FIG. 10, in the battery in which the seal portion 2P is provided at the center of the substantially circular end surface of the accommodating portion 2W, the accommodating space for arranging the circuit element 7 becomes narrow. For this reason, the length of the battery including the circuit element 7 is increased, and the volume efficiency of the entire battery including the circuit member is lowered.
［２．３　変形例］
　上述の第２の実施形態では、正極リード３が導出されるシール部２Ｐにプリント基板６および回路素子７を配置する構成を例として説明したが、本技術はこれに限定されるものではない。負極リード４が導出されるシール部２Ｑ上にプリント基板６および回路素子７を配置してもよいし、両方のシール部２Ｐ、２Ｑ上にプリント基板６および回路素子７を配置する構成を採用してもよい。 [2.3 Modification]
In the above-described second embodiment, the configuration in which the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P from which the positive electrode lead 3 is led is described as an example, but the present technology is not limited to this. The printed circuit board 6 and the circuit element 7 may be arranged on the seal part 2Q from which the negative electrode lead 4 is led out, or a configuration in which the printed circuit board 6 and the circuit element 7 are arranged on both the seal parts 2P and 2Q is adopted. May be.
　上述の第２の実施形態では、正極リード３および負極リード４の両方がプリント基板６に接続された構成を例として説明したが、本技術はこれに限定されるものではない。正極リード３および負極リード４の少なくとも一方がプリント基板６に接続された構成を採用することも可能である。 In the second embodiment described above, the configuration in which both the positive electrode lead 3 and the negative electrode lead 4 are connected to the printed board 6 has been described as an example, but the present technology is not limited to this. It is also possible to adopt a configuration in which at least one of the positive electrode lead 3 and the negative electrode lead 4 is connected to the printed circuit board 6.
　上述の第２の実施形態では、プリント基板６としてＬ字状に屈曲されたものを用いる場合を例として説明したが、プリント基板の形態はこれに限定されるものではなく、例示するならば、Ｌ字状以外の形状に屈曲されたプリント基板を用いてもよいし、平板状のプリント基板を用いてもよいし、多層構造または折り畳み構造のプリント基板を用いてもよい。プリント基板６の枚数も特に限定されるものではなく、複数のプリント基板６がシール部２Ｐ上に配置されていてもよい。シール部２Ｐが収容部２Ｗの略円形状の端面の中心からずれているため、このような多層構造または折り畳み構造のプリント基板や複数のプリント基板６をシール部２Ｐ上に配置することが容易である。 In the second embodiment described above, the case where the printed circuit board 6 is bent in an L shape has been described as an example. However, the form of the printed circuit board is not limited to this. A printed board bent into a shape other than the L-shape may be used, a flat printed board may be used, or a printed board having a multilayer structure or a folded structure may be used. The number of printed circuit boards 6 is not particularly limited, and a plurality of printed circuit boards 6 may be arranged on the seal portion 2P. Since the seal part 2P is displaced from the center of the substantially circular end face of the accommodating part 2W, it is easy to arrange such a multilayer structure or a folded printed circuit board or a plurality of printed circuit boards 6 on the seal part 2P. is there.
　上述の第２の実施形態では、接続部材４Ａにより負極リード４とプリント基板６とを接続する例について説明したが、負極リード４の長さを長くして負極リード４とプリント基板６とを直接接続するようにしてもよい。 In the second embodiment, the example in which the negative electrode lead 4 and the printed board 6 are connected by the connecting member 4A has been described. However, the negative electrode lead 4 and the printed board 6 are directly connected to each other by increasing the length of the negative electrode lead 4. You may make it connect.
　上述の第２の実施形態では、プリント基板６が収容部２Ｗの他方の端面に対して垂直方向に延設されている場合を例として説明したが、図１１Ａに示すように、プリント基板６が収容部２Ｗの一方の端面に対して斜め方向に延設されていてもよいし、図１１Ｂに示すように、プリント基板６が収容部２Ｗの一方の端面に対して水平方向に延設されていてもよい。 In the second embodiment described above, the case where the printed circuit board 6 extends in the direction perpendicular to the other end surface of the housing portion 2W has been described as an example. However, as illustrated in FIG. 11B, the printed circuit board 6 may be extended in the horizontal direction with respect to the one end surface of the housing portion 2W, as shown in FIG. 11B. May be.
　図１２に示すように、収容部２Ｗの周面側に設けられたシール部２Ｒから正極リード３および負極リード４を導出するようにしてもよい。この場合、導出された正極リード３、負極リード４はそれぞれ、板状または線状の接続部材３Ｂ、４Ｂを介してプリント基板６に接続される。 As shown in FIG. 12, the positive electrode lead 3 and the negative electrode lead 4 may be led out from a seal portion 2R provided on the peripheral surface side of the accommodating portion 2W. In this case, the derived positive electrode lead 3 and negative electrode lead 4 are connected to the printed circuit board 6 via plate-like or linear connection members 3B and 4B, respectively.
＜３．第３の実施形態＞
［３．１　組電池の構成］
　第３の実施形態に係る組電池は、第１の実施形態に係る電池を直列または並列に接続したものである。 <3. Third Embodiment>
[3.1 Configuration of battery pack]
The assembled battery according to the third embodiment is obtained by connecting the batteries according to the first embodiment in series or in parallel.
（第１の組電池）
　図１３Ａは、第１の組電池の構成を示す。第１の組電池は、複数の電池１０が直列に接続された構成を有している。なお、図１３Ａでは、シール部２Ｒの図示を省略している。図１３Ａにおいて、記号“＋”、“－”は、収容部２Ｗの端面から引き出された正極リード３および負極リード４の極性を表している。 (First assembled battery)
FIG. 13A shows a configuration of the first assembled battery. The first assembled battery has a configuration in which a plurality of batteries 10 are connected in series. In FIG. 13A, illustration of the seal portion 2R is omitted. In FIG. 13A, the symbols “+” and “−” represent the polarities of the positive electrode lead 3 and the negative electrode lead 4 drawn out from the end face of the housing portion 2W.
　複数の電池１０は、隣接する一方の電池１０の正極リード３が導出された収容部２Ｗの端面と、隣接する他方の電池１０の負極リード４が導出された収容部２Ｗの端面とが対向するように、略円柱状の収容部２Ｗの軸方向に並べられている。対向する端面において正極リード３と負極リード４とが接続されている。 In the plurality of batteries 10, the end surface of the housing portion 2 </ b> W from which the positive electrode lead 3 of one adjacent battery 10 is led out is opposed to the end surface of the housing portion 2 </ b> W from which the negative electrode lead 4 of the other adjacent battery 10 is led out. In this way, they are arranged in the axial direction of the substantially cylindrical accommodating portions 2W. The positive electrode lead 3 and the negative electrode lead 4 are connected to the opposing end surfaces.
　隣接する２つの電池１０の間にあるシール部２Ｐ、２Ｑは、収容部２Ｗの端面に対して略垂直に立てられている。隣接する２つの電池１０の間にてシール部２Ｑ、２Ｐが干渉しないように、隣接する一方の電池１０は他方の電池１０に対して、略円柱状の収容部２Ｗの中心軸を回転の中心軸として回転されている。回転の角度は、約１８０度であることが好ましい。 The seal portions 2P and 2Q between the two adjacent batteries 10 are set substantially perpendicular to the end surface of the accommodating portion 2W. One adjacent battery 10 is centered on the center axis of the substantially cylindrical housing 2W relative to the other battery 10 so that the seal portions 2Q and 2P do not interfere between the two adjacent batteries 10. It is rotated as an axis. The angle of rotation is preferably about 180 degrees.
　組電池の一端に位置する電池１０のシール部２Ｐは、収容部２Ｗの端面に対して略垂直に立てられている。このように略垂直に立てられたシール部２Ｐ上に、プリント基板６および回路素子７が配置されている。組電池の一端に位置する電池１０の正極リード３は、プリント基板６に接続されている。 The seal part 2P of the battery 10 located at one end of the assembled battery is set up substantially perpendicular to the end surface of the housing part 2W. Thus, the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P standing substantially vertically. The positive electrode lead 3 of the battery 10 located at one end of the assembled battery is connected to the printed circuit board 6.
　組電池の他端に位置する電池１０のシール部２Ｑは、収容部２Ｗの端面の中心側に向けて折り曲げられ、端面と略平行となっている。このように折り曲げられたシール部２Ｑから導出された負極リード４は、板状または線状の接続部材４Ｂを介してプリント基板６に接続されている。 The seal part 2Q of the battery 10 located at the other end of the assembled battery is bent toward the center side of the end face of the accommodating part 2W and is substantially parallel to the end face. The negative electrode lead 4 led out from the bent seal portion 2Q is connected to the printed circuit board 6 via a plate-like or linear connection member 4B.
（第２の組電池）
　図１３Ｂは、第２の組電池の構成を示す。隣接する２つの電池１０の間にあるシール部２Ｐ、２Ｑは対向するように設けられるとともに、収容部２Ｗの端面の中心側に向けて折り曲げられて端面と略平行となっている。上記以外の構成は、第１の例における組電池と同様である。 (Second assembled battery)
FIG. 13B shows the configuration of the second assembled battery. The seal portions 2P and 2Q between the two adjacent batteries 10 are provided so as to face each other, and are bent toward the center side of the end surface of the housing portion 2W so as to be substantially parallel to the end surface. The configuration other than the above is the same as that of the assembled battery in the first example.
（第３の組電池）
　図１４Ａは、第３の組電池の構成を示す。第３の組電池は、複数の電池１０が並列に接続された構成を有している。なお、図１４Ａでは、シール部２Ｒの図示を省略している。複数の電池１０は、負極リード４が導出された収容部２Ｗの端面同士が対向するように、略円柱状の収容部２Ｗの軸方向に並べられている。対向する端面において負極リード４同士が接続されている。 (Third assembled battery)
FIG. 14A shows a configuration of the third assembled battery. The third assembled battery has a configuration in which a plurality of batteries 10 are connected in parallel. In FIG. 14A, illustration of the seal portion 2R is omitted. The plurality of batteries 10 are arranged in the axial direction of the substantially cylindrical housing portion 2W so that the end faces of the housing portion 2W from which the negative electrode lead 4 is led out face each other. The negative electrode leads 4 are connected to each other at the opposing end surfaces.
　隣接する２つの電池１０の間にあるシール部２Ｑ、２Ｑは、収容部２Ｗの端面に対して略垂直に立てられている。隣接する２つの電池１０の間にてシール部２Ｑ、２Ｑが干渉しないように、隣接する一方の電池１０は他方の電池１０に対して、略円柱状の収容部２Ｗの中心軸を回転の中心軸として回転されている。回転の角度は、約１８０度であることが好ましい。 The seal portions 2Q and 2Q between the two adjacent batteries 10 are set substantially perpendicular to the end surface of the accommodating portion 2W. One adjacent battery 10 is centered on the center axis of the substantially cylindrical housing 2W relative to the other battery 10 so that the seal portions 2Q and 2Q do not interfere between the two adjacent batteries 10. It is rotated as an axis. The angle of rotation is preferably about 180 degrees.
　組電池の一端に位置する電池１０のシール部２Ｐは、収容部２Ｗの端面に対して略垂直に立てられている。このように略垂直に立てられたシール部２Ｐ上に、プリント基板６および回路素子７が配置されている。 The seal part 2P of the battery 10 located at one end of the assembled battery is set up substantially perpendicular to the end surface of the housing part 2W. Thus, the printed circuit board 6 and the circuit element 7 are arranged on the seal portion 2P standing substantially vertically.
　組電池の一端に位置する電池１０の正極リード３は、プリント基板６に接続されている。組電池の他端に位置する電池１０のシール部２Ｐは、収容部２Ｗの端面の中心側に向けて折り曲げられ、端面と略平行となっている。このように折り曲げられたシール部２Ｐから導出された正極リード３は、板状または線状の接続部材３Ｂを介してプリント基板６に接続されている。対向する端面において接続された負極リード４は、板状または線状の接続部材４Ｂを介してプリント基板６に接続されている。 The positive lead 3 of the battery 10 located at one end of the assembled battery is connected to the printed circuit board 6. The seal part 2P of the battery 10 located at the other end of the assembled battery is bent toward the center side of the end face of the accommodating part 2W and is substantially parallel to the end face. The positive electrode lead 3 led out from the bent seal portion 2P is connected to the printed circuit board 6 via a plate-like or linear connection member 3B. The negative electrode lead 4 connected at the opposing end face is connected to the printed circuit board 6 via a plate-like or linear connection member 4B.
（第４の組電池）
　図１４Ｂは、第４の組電池の構成を示す。隣接する２つの電池１０の間にあるシール部２Ｑ、２Ｑは対向するように設けられるとともに、収容部２Ｗの端面の中心側に向けて折り曲げられて端面と略平行となっている。 (4th battery pack)
FIG. 14B shows a configuration of the fourth assembled battery. The seal portions 2Q and 2Q between the two adjacent batteries 10 are provided so as to face each other, and are bent toward the center side of the end surface of the accommodating portion 2W so as to be substantially parallel to the end surface.
（参考例１～４の組電池）
　参考例１～４の組電池は、図１５Ａ、１５Ｂ、１６Ａ、１６Ｂに示すように、電池としてシール部２Ｐ、２Ｑが収容部２Ｗの略円形状の端面の中心に設けられているものを用いる以外は、第１～第４の組電池と同様の構成を有している。 (The assembled battery of Reference Examples 1 to 4)
As the assembled batteries of Reference Examples 1 to 4, as shown in FIGS. 15A, 15B, 16A, and 16B, a battery in which seal portions 2P and 2Q are provided at the center of a substantially circular end surface of the accommodating portion 2W is used. Except for the above, it has the same configuration as the first to fourth assembled batteries.
［３．２　効果］
　第１、第３の組電池では、収容部２Ｗの端面に略垂直に立てられたシール部２Ｐが収容部２Ｗの端面の中心からずれて設けられた複数の電池１０を用いている。このため、隣接する一方の電池１０を他方の電池１０に対して収容部２Ｗの中心軸を回転の中心軸として回転させることで、隣接する２つの電池１０の間にてシール部２Ｑ、２Ｐまたはシール部２Ｑ、２Ｑが干渉しないようにできる。これに対して、参考例１、３の組電池では、隣接する２つの電池１０の間にてシール部２Ｑ、２Ｐまたはシール部２Ｑ、２Ｑが干渉することは避けられない。したがって、第１、第３の組電池における電池間のスペースは、参考例１、３の組電池における電池間のスペースの半分程度となる。よって、第１、第３の組電池は、参考例１、３の組電池に比べて電池間のスペースを低減できる。 [3.2 Effects]
In the first and third assembled batteries, a plurality of batteries 10 are used in which a seal portion 2P standing substantially perpendicular to the end surface of the housing portion 2W is provided offset from the center of the end surface of the housing portion 2W. For this reason, by rotating the adjacent one battery 10 with respect to the other battery 10 using the central axis of the accommodating portion 2W as the central axis of rotation, the seal portions 2Q, 2P or The seal portions 2Q and 2Q can be prevented from interfering with each other. On the other hand, in the assembled batteries of Reference Examples 1 and 3, it is inevitable that the seal portions 2Q and 2P or the seal portions 2Q and 2Q interfere between the two adjacent batteries 10. Therefore, the space between the batteries in the first and third assembled batteries is about half of the space between the batteries in the assembled batteries of Reference Examples 1 and 3. Therefore, the first and third assembled batteries can reduce the space between the batteries as compared to the assembled batteries of Reference Examples 1 and 3.
　第２、第４の組電池では、隣接する２つの電池１０の間において、収容部２Ｗの端面の中心側に向けてシール部２Ｑ、２Ｐまたはシール部２Ｑ、２Ｑが折り曲げられて端面と略平行となっている電池１０を用いている。このため、隣接する電池１０の間の空間幅を減らすことができる。また、隣接する２つの電池１０の間にあるシール部２Ｑ、２Ｐまたはシール部２Ｑ、２Ｑは、収容部２Ｗの端面の中心からずれ、かつ対向するように設けられる。このため、折り曲げられたシール部２Ｑを収容可能な空間の高さＤを広くすることができる。なお、高さＤは、“収容部２Ｗの半径”と“シール部２Ｐ、２Ｑの中心からのずらし量”の和に等しい。これに対して、参考例２、４の組電池では、隣接する電池１０の間の空間幅を減らすことはできるが、折り曲げられたシール部２Ｑを収容可能な空間の高さＤを広くすることはできない。 In the second and fourth assembled batteries, between the two adjacent batteries 10, the seal portions 2Q, 2P or the seal portions 2Q, 2Q are bent toward the center side of the end surface of the housing portion 2W, and substantially parallel to the end surface. The battery 10 is used. For this reason, the space width between the adjacent batteries 10 can be reduced. Further, the seal portions 2Q and 2P or the seal portions 2Q and 2Q between the two adjacent batteries 10 are provided so as to be shifted from and opposed to the center of the end surface of the housing portion 2W. For this reason, the height D of the space in which the folded seal portion 2Q can be accommodated can be increased. The height D is equal to the sum of the “radius of the accommodating portion 2W” and the “shift amount from the center of the seal portions 2P and 2Q”. On the other hand, in the assembled batteries of Reference Examples 2 and 4, the space width between the adjacent batteries 10 can be reduced, but the height D of the space in which the folded seal portion 2Q can be accommodated is widened. I can't.
［３．３　変形例］
　第１の実施形態に係る電池を直並列に接続して組電池を構成するようにしてもよい。例えば、第１および／または第２の組電池と第３および／または第４の組電池とを接続して、直並列の組電池を構成するようにしてもよい。 [3.3 Modification]
The battery according to the first embodiment may be connected in series and parallel to constitute an assembled battery. For example, the first and / or second assembled battery and the third and / or fourth assembled battery may be connected to form a series-parallel assembled battery.
　複数の電池を収容部２Ｗの端面同士が対向するようにして並べて、全体として湾曲形状、円形状または楕円形状などを有する組電池を構成することも可能である。この場合にも、プリント基板６や回路素子７などの回路部材の配置空間を広く確保でき、組電池の形状の自由度を高めることができる。 It is also possible to arrange a plurality of batteries so that the end faces of the accommodating portion 2W face each other, thereby constituting an assembled battery having a curved shape, a circular shape, an elliptical shape, or the like as a whole. Also in this case, it is possible to secure a wide arrangement space for circuit members such as the printed circuit board 6 and the circuit element 7 and to increase the degree of freedom of the shape of the assembled battery.
＜４．第４の実施形態＞
　第４の実施形態では、第１の実施形態またはその変形例に係る電池を備える電子機器について説明する。 <4. Fourth Embodiment>
In the fourth embodiment, an electronic device including the battery according to the first embodiment or a modification thereof will be described.
［４．１　電子機器の構成］
　以下、図１７を参照して、本技術の第４の実施形態に係る電池パック３００および電子機器４００の一構成例について説明する。電子機器４００は、電子機器本体の電子回路４０１と、電池パック３００とを備える。電池パック３００は、正極端子３３１ａおよび負極端子３３１ｂを介して電子回路４０１に対して電気的に接続されている。電子機器４００は、例えば、ユーザにより電池パック３００を着脱自在な構成を有している。なお、電子機器４００の構成はこれに限定されるものではなく、ユーザにより電池パック３００を電子機器４００から取り外しできないように、電池パック３００が電子機器４００内に内蔵されている構成を有していてもよい。 [4.1 Electronic device configuration]
Hereinafter, with reference to FIG. 17, one structural example of the battery pack 300 and the electronic device 400 according to the fourth embodiment of the present technology will be described. The electronic device 400 includes an electronic circuit 401 of the electronic device body and a battery pack 300. The battery pack 300 is electrically connected to the electronic circuit 401 via the positive terminal 331a and the negative terminal 331b. For example, the electronic device 400 has a configuration in which the battery pack 300 is detachable by a user. The configuration of the electronic device 400 is not limited to this, and the battery pack 300 is built in the electronic device 400 so that the user cannot remove the battery pack 300 from the electronic device 400. May be.
　電池パック３００の充電時には、電池パック３００の正極端子３３１ａ、負極端子３３１ｂがそれぞれ、充電器（図示せず）の正極端子、負極端子に接続される。一方、電池パック３００の放電時（電子機器４００の使用時）には、電池パック３００の正極端子３３１ａ、負極端子３３１ｂがそれぞれ、電子回路４０１の正極端子、負極端子に接続される。 When charging the battery pack 300, the positive terminal 331a and the negative terminal 331b of the battery pack 300 are connected to the positive terminal and the negative terminal of a charger (not shown), respectively. On the other hand, when the battery pack 300 is discharged (when the electronic apparatus 400 is used), the positive terminal 331a and the negative terminal 331b of the battery pack 300 are connected to the positive terminal and the negative terminal of the electronic circuit 401, respectively.
　電子機器４００としては、例えば、ウエアラブル機器、ノート型パーソナルコンピュータ、タブレット型コンピュータ、携帯電話（例えばスマートフォンなど）または携帯情報端末（Personal Digital Assistants：ＰＤＡ）などの携帯機器、表示装置（ＬＣＤ、ＥＬディスプレイ、電子ペーパなど）、撮像装置（例えばデジタルスチルカメラ、デジタルビデオカメラなど）、オーディオ機器（例えばポータブルオーディオプレイヤー）、ゲーム機器、コードレスフォン子機、電子書籍、電子辞書、ラジオ、ヘッドホン、ナビゲーションシステム、メモリーカード、ペースメーカー、補聴器、電動工具、電気シェーバー、冷蔵庫、エアコン、テレビ、ステレオ、温水器、電子レンジ、食器洗い器、洗濯機、乾燥器、照明機器、玩具、医療機器、ロボット、ロードコンディショナー、信号機などが挙げられるが、これに限定されるものでなない。 Examples of the electronic device 400 include a wearable device, a notebook personal computer, a tablet computer, a mobile phone (for example, a smartphone) or a portable information terminal (Personal Digital Assistant: PDA), a display device (LCD, EL display). , Electronic paper, etc.), imaging device (eg, digital still camera, digital video camera, etc.), audio equipment (eg, portable audio player), game machine, cordless phone, e-book, electronic dictionary, radio, headphones, navigation system, Memory card, pacemaker, hearing aid, electric tool, electric shaver, refrigerator, air conditioner, TV, stereo, water heater, microwave oven, dishwasher, washing machine, dryer, lighting equipment, toy, medical equipment, robot DOO, load conditioners, but such traffic can be mentioned, without such limited thereto.
（電子回路）
　電子回路４０１は、例えば、ＣＰＵ、周辺ロジック部、インターフェース部および記憶部などを備え、電子機器４００の全体を制御する。 (Electronic circuit)
The electronic circuit 401 includes, for example, a CPU, a peripheral logic unit, an interface unit, a storage unit, and the like, and controls the entire electronic device 400.
（電池パック）
　電池パック３００は、組電池３０１と、充放電回路３０２とを備える。組電池３０１は、複数の二次電池３０１ａを直列および／または並列に接続して構成されている。複数の二次電池３０１ａは、例えばｎ並列ｍ直列（ｎ、ｍは正の整数）に接続される。なお、図１７では、６つの二次電池３０１ａが２並列３直列（２Ｐ３Ｓ）に接続された例が示されている。二次電池３０１ａとしては、第１の実施形態またはその変形例に係る電池が用いられる。 (Battery pack)
The battery pack 300 includes an assembled battery 301 and a charge / discharge circuit 302. The assembled battery 301 is configured by connecting a plurality of secondary batteries 301a in series and / or in parallel. The plurality of secondary batteries 301a are connected, for example, in n parallel m series (n and m are positive integers). FIG. 17 shows an example in which six secondary batteries 301a are connected in two parallel three series (2P3S). As the secondary battery 301a, the battery according to the first embodiment or its modification is used.
　充放電回路３０２は、組電池３０１の充放電を制御する制御部である。具体的には、充電時には、充放電回路３０２は、組電池３０１に対する充電を制御する。一方、放電時（すなわち電子機器４００の使用時）には、充放電回路３０２は、電子機器４００に対する放電を制御する。 The charging / discharging circuit 302 is a control unit that controls charging / discharging of the assembled battery 301. Specifically, during charging, the charging / discharging circuit 302 controls charging of the assembled battery 301. On the other hand, at the time of discharging (that is, when the electronic device 400 is used), the charging / discharging circuit 302 controls the discharging of the electronic device 400.
［４．２　変形例］
　上述の第４の実施形態では、電池パック３００が、複数の二次電池３０１ａにより構成される組電池３０１を備える場合を例として説明したが、電池パック３００が、組電池３０１に代えて１つの二次電池３０１ａを備える構成を採用してもよい。 [4.2 Modification]
In the above-described fourth embodiment, the case where the battery pack 300 includes the assembled battery 301 including a plurality of secondary batteries 301 a has been described as an example. However, the battery pack 300 is replaced with one assembled battery 301. You may employ | adopt the structure provided with the secondary battery 301a.
　以上、本技術の実施形態について具体的に説明したが、本技術は、上述の実施形態に限定されるものではなく、本技術の技術的思想に基づく各種の変形が可能である。 The embodiment of the present technology has been specifically described above, but the present technology is not limited to the above-described embodiment, and various modifications based on the technical idea of the present technology are possible.
　例えば、上述の実施形態において挙げた構成、方法、工程、形状、材料および数値などはあくまでも例に過ぎず、必要に応じてこれと異なる構成、方法、工程、形状、材料および数値などを用いてもよい。 For example, the configurations, methods, processes, shapes, materials, numerical values, and the like given in the above-described embodiments are merely examples, and different configurations, methods, processes, shapes, materials, numerical values, and the like are used as necessary. Also good.
　また、上述の実施形態の構成、方法、工程、形状、材料および数値などは、本技術の主旨を逸脱しない限り、互いに組み合わせることが可能である。 Further, the configurations, methods, processes, shapes, materials, numerical values, and the like of the above-described embodiments can be combined with each other without departing from the gist of the present technology.
　また、本技術は以下の構成を採用することもできる。
（１）
　略円柱状の電極体と、
　前記電極体を収容する略円柱状の収容部を有し、前記収容部の周囲のうち周面側にある折り返し部を除く３方にシール部が設けられたフィルム状外装材と
　を備え、
　前記収容部の端面側に設けられたシール部は、前記端面の中心位置からずれている電池。
（２）
　前記収容部は、深さが異なる略部分円柱状の第１収容部および略部分円柱状の第２収容部により構成されている（１）に記載の電池。
（３）
　前記折り返し部は、前記収容部の周面に対して突出していない（１）または（２）に記載の電池。
（４）
　前記シール部は、前記収容部の両端面側および周面側に設けられている（１）から（３）のいずれかに記載の電池。
（５）
　前記収容部の端面部に設けられた回路部材をさらに備え、
　前記回路部材は、前記端面に垂直な方向から見ると、前記端面の外周の内側に位置している（１）から（４）のいずれかに記載の電池。
（６）
　前記回路部材は、前記端面のシール部上に設けられている（５）に記載の電池。
（７）
　前記回路部材は、前記端面に対して略平行または略垂直に設けられている（５）または（６）に記載の電池。
（８）
　前記回路部材は、プリント基板である（５）から（７）のいずれかに記載の電池。
（９）
　前記電極体に設けられた正極リードおよび負極リードをさらに備え、
　前記正極リードおよび前記負極リードは、前記電極体の端面に沿うように屈曲されている（１）から（８）のいずれかに記載の電池。
（１０）
　前記収容部の周面側のシール部は、前記収容部の周面に倣うように屈曲されている（１）から（９）のいずれかに記載の電池。
（１１）
　前記収容部の一方の端面側から前記外装材の外側に導出された第１リードと、
　前記収容部の他方の端面側から前記外装材の外側に導出された第２リードと
　をさらに備える（１）から（１０）のいずれかに記載の電池。
（１２）
　前記収容部の一方の端面部に設けられ、前記第１リードおよび前記第２リードに接続された回路部材をさらに備える（１１）に記載の電池。
（１３）
　（１）から（１２）のいずれかに記載の電池が複数接続された組電池。
（１４）
　（１）から（１２）のいずれかに記載の電池を備える電子機器。
（１５）
　同一方向に延設され、該延設の方向に直交する方向に並ぶ、深さが異なる略部分円柱状の第１収容部および略部分円柱状の第２収容部をフィルム状外装材に形成し、
　前記外装材を前記第１収容部および前記第２収容部の間で折り返して、前記第１収容部および前記第２収容部に略円柱状の電極体を収容し、
　前記第１収容部および前記第２収容部により構成された収容部の周囲のうち周面側にある前記折り返し部を除く３方をシールすること
　を含む電池の製造方法。
（１６）
　前記シールの際には、前記収容部の両端側をシールした後、前記外装材内を脱気しながら前記収容部の周面側をシールする（１５）に記載の電池の製造方法。
（１７）
　前記周面側のシールの際には、前記外装材に張力を加えて前記電極体と前記外装材とを密着させる（１６）に記載の電池の製造方法。
（１８）
　前記外装材の成形の際には、同一方向に延設され、該延設の方向に直交する方向に並ぶ、高さが異なる略部分円柱状の第１成形部および略部分円柱状の第２成形部により、前記外装材の第１面を押圧するとともに、前記第１成形部および前記第２成形部の間において前記外装材の第２面を支持部材により支持しつつ、前記外装材を変形させる（１５）から（１７）のいずれかに記載の電池の製造方法。
（１９）
　前記第１成形部の高さは、前記第２成形部の高さに比べて高く、
　前記第１成形部の幅は、前記第２の成形部の幅に比べて広い（１８）に記載の電池の製造方法。
（２０）
　前記支持部材の先端は、前記外装材が載置される載置面を基準にして前記押圧の方向にずれた位置にある（１８）または（１９）に記載の電池の製造方法。
（２１）
　前記支持部材の厚みは、前記外装材の厚さの１０倍以下である（１５）から（２０）のいずれかに記載の電池の製造方法。 The present technology can also employ the following configurations.
(1)
A substantially cylindrical electrode body;
A substantially cylindrical storage portion that stores the electrode body, and a film-like exterior material provided with a seal portion in three directions excluding the folded portion on the peripheral surface side of the periphery of the storage portion,
A battery in which a seal portion provided on an end surface side of the housing portion is deviated from a center position of the end surface.
(2)
The said accommodating part is a battery as described in (1) comprised by the substantially partial cylindrical 1st accommodating part and the substantially partial cylindrical 2nd accommodating part from which depth differs.
(3)
The battery according to (1) or (2), wherein the folded portion does not protrude with respect to the peripheral surface of the housing portion.
(4)
The battery according to any one of (1) to (3), wherein the seal portion is provided on both end surface sides and a peripheral surface side of the housing portion.
(5)
It further comprises a circuit member provided on an end surface portion of the housing portion,
The battery according to any one of (1) to (4), wherein the circuit member is located inside an outer periphery of the end face when viewed from a direction perpendicular to the end face.
(6)
The battery according to (5), wherein the circuit member is provided on a seal portion of the end surface.
(7)
The battery according to (5) or (6), wherein the circuit member is provided substantially parallel or substantially perpendicular to the end surface.
(8)
The battery according to any one of (5) to (7), wherein the circuit member is a printed circuit board.
(9)
Further comprising a positive electrode lead and a negative electrode lead provided on the electrode body,
The battery according to any one of (1) to (8), wherein the positive electrode lead and the negative electrode lead are bent along the end face of the electrode body.
(10)
The battery according to any one of (1) to (9), wherein the seal portion on the circumferential surface side of the housing portion is bent so as to follow the circumferential surface of the housing portion.
(11)
A first lead led out from the one end face side of the housing portion to the outside of the exterior material;
The battery according to any one of (1) to (10), further including: a second lead led out from the other end surface side of the housing portion to the outside of the exterior material.
(12)
The battery according to (11), further comprising a circuit member provided on one end surface portion of the housing portion and connected to the first lead and the second lead.
(13)
An assembled battery in which a plurality of the batteries according to any one of (1) to (12) are connected.
(14)
An electronic device comprising the battery according to any one of (1) to (12).
(15)
A substantially partial cylindrical first housing portion and a substantially partial cylindrical second housing portion that extend in the same direction and are arranged in a direction orthogonal to the extending direction are formed on the film-shaped exterior member. ,
Folding the exterior material between the first housing portion and the second housing portion, and housing a substantially cylindrical electrode body in the first housing portion and the second housing portion,
A method for manufacturing a battery, comprising: sealing three sides of the periphery of the accommodating portion constituted by the first accommodating portion and the second accommodating portion, excluding the folded portion on the peripheral surface side.
(16)
In the case of the said sealing, after sealing the both ends side of the said accommodating part, the peripheral surface side of the said accommodating part is sealed, deaeration inside the said exterior material (15).
(17)
The method for manufacturing a battery according to (16), wherein, when the peripheral surface side is sealed, tension is applied to the exterior material to closely contact the electrode body and the exterior material.
(18)
When molding the exterior material, a first part having a substantially partial columnar shape and a second part having a substantially partial columnar shape extending in the same direction and arranged in a direction orthogonal to the direction of the extension and having different heights. The molding part is pressed against the first surface of the exterior material, and the exterior material is deformed while the second surface of the exterior material is supported by a support member between the first molded part and the second molded part. The method for producing a battery according to any one of (15) to (17).
(19)
The height of the first molding part is higher than the height of the second molding part,
The method of manufacturing a battery according to (18), wherein the width of the first molded portion is wider than the width of the second molded portion.
(20)
The battery manufacturing method according to (18) or (19), wherein a tip of the support member is at a position shifted in the pressing direction with reference to a mounting surface on which the exterior material is mounted.
(21)
The thickness of the said supporting member is a manufacturing method of the battery in any one of (15) to (20) which is 10 times or less of the thickness of the said exterior material.
　１　　電極体
　２　　外装材
　２Ｗ、２Ｘ、２Ｙ　　収容部
　２Ａ、２Ｂ、２Ｃ　　周縁部
　２Ｄ　　折り返し部
　２Ｐ、２Ｑ、２Ｒ　　シール部
　３　　正極リード
　４　　負極リード
　６　　プリント基板
　７　　回路素子
　１０　　電池
　３１　　パンチ
　３２、３２　　成形部
　４１　　ダイ
　４１Ａ、４２Ａ、４３Ａ　　孔部
　４２　　下ダイ
　４３　　上ダイ
　４４　　支持部材 DESCRIPTION OF SYMBOLS 1 Electrode body 2 Exterior material 2W, 2X, 2Y Housing part 2A, 2B, 2C Peripheral part 2D Folding part 2P, 2Q, 2R Seal part 3 Positive electrode lead 4 Negative electrode lead 6 Printed circuit board 7 Circuit element 10 Battery 31 Punch 32, 32 Molding Portion 41 Die 41A, 42A, 43A Hole 42 Lower die 43 Upper die 44 Support member

Claims (21)

  1. 　略円柱状の電極体と、
    　前記電極体を収容する略円柱状の収容部を有し、前記収容部の周囲のうち周面側にある折り返し部を除く３方にシール部が設けられたフィルム状外装材と
    　を備え、
    　前記収容部の端面側に設けられたシール部は、前記端面の中心位置からずれている電池。     A substantially cylindrical electrode body;
    A substantially cylindrical storage portion that stores the electrode body, and a film-like exterior material provided with a seal portion in three directions excluding the folded portion on the peripheral surface side of the periphery of the storage portion,
    A battery in which a seal portion provided on an end surface side of the housing portion is shifted from a center position of the end surface.
  2. 　前記収容部は、深さが異なる略部分円柱状の第１収容部および略部分円柱状の第２収容部により構成されている請求項１に記載の電池。 2. The battery according to claim 1, wherein the accommodating portion is configured by a first partial accommodating portion having a substantially partial columnar shape and a second accommodating portion having a substantially partial cylindrical shape having different depths.
  3. 　前記折り返し部は、前記収容部の周面に対して突出していない請求項１に記載の電池。 The battery according to claim 1, wherein the folded portion does not protrude with respect to the peripheral surface of the housing portion.
  4. 　前記シール部は、前記収容部の両端面側および周面側に設けられている請求項１に記載の電池。 2. The battery according to claim 1, wherein the seal portion is provided on both end surfaces and a peripheral surface of the housing portion.
  5. 　前記収容部の端面部に設けられた回路部材をさらに備え、
    　前記回路部材は、前記端面に垂直な方向から見ると、前記端面の外周の内側に位置している請求項１に記載の電池。     It further comprises a circuit member provided on an end surface portion of the housing portion,
    The battery according to claim 1, wherein the circuit member is located inside an outer periphery of the end face when viewed from a direction perpendicular to the end face.
  6. 　前記回路部材は、前記端面のシール部上に設けられている請求項５に記載の電池。 The battery according to claim 5, wherein the circuit member is provided on a seal portion of the end face.
  7. 　前記回路部材は、前記端面に対して略平行または略垂直に設けられている請求項５に記載の電池。 The battery according to claim 5, wherein the circuit member is provided substantially parallel or substantially perpendicular to the end face.
  8. 　前記回路部材は、プリント基板である請求項５に記載の電池。 The battery according to claim 5, wherein the circuit member is a printed circuit board.
  9. 　前記電極体に設けられた正極リードおよび負極リードをさらに備え、
    　前記正極リードおよび前記負極リードは、前記電極体の端面に沿うように屈曲されている請求項１に記載の電池。     Further comprising a positive electrode lead and a negative electrode lead provided on the electrode body,
    The battery according to claim 1, wherein the positive electrode lead and the negative electrode lead are bent along an end surface of the electrode body.
  10. 　前記収容部の周面側のシール部は、前記収容部の周面に倣うように屈曲されている請求項１に記載の電池。 2. The battery according to claim 1, wherein a seal portion on a circumferential surface side of the housing portion is bent so as to follow the circumferential surface of the housing portion.
  11. 　前記収容部の一方の端面側から前記外装材の外側に導出された第１リードと、
    　前記収容部の他方の端面側から前記外装材の外側に導出された第２リードと
    　をさらに備える請求項１に記載の電池。     A first lead led out from the one end face side of the housing portion to the outside of the exterior material;
    The battery according to claim 1, further comprising: a second lead led out from the other end surface side of the housing portion to the outside of the exterior material.
  12. 　前記収容部の一方の端面部に設けられ、前記第１リードおよび前記第２リードに接続された回路部材をさらに備える請求項１１に記載の電池。 The battery according to claim 11, further comprising a circuit member provided on one end surface portion of the housing portion and connected to the first lead and the second lead.
  13. 　請求項１に記載の電池が複数接続された組電池。 An assembled battery in which a plurality of the batteries according to claim 1 are connected.
  14. 　請求項１に記載の電池を備える電子機器。 An electronic device comprising the battery according to claim 1.
  15. 　同一方向に延設され、該延設の方向に直交する方向に並ぶ、深さが異なる略部分円柱状の第１収容部および略部分円柱状の第２収容部をフィルム状外装材に形成し、
    　前記外装材を前記第１収容部および前記第２収容部の間で折り返して、前記第１収容部および前記第２収容部に略円柱状の電極体を収容し、
    　前記第１収容部および前記第２収容部により構成された収容部の周囲のうち周面側にある前記折り返し部を除く３方をシールすること
    　を含む電池の製造方法。     A substantially partial cylindrical first housing portion and a substantially partial cylindrical second housing portion that extend in the same direction and are arranged in a direction orthogonal to the extending direction are formed on the film-shaped exterior member. ,
    Folding the exterior material between the first housing portion and the second housing portion, and housing a substantially cylindrical electrode body in the first housing portion and the second housing portion,
    A method for manufacturing a battery, comprising: sealing three sides of the periphery of the accommodating portion constituted by the first accommodating portion and the second accommodating portion, excluding the folded portion on the peripheral surface side.
  16. 　前記シールの際には、前記収容部の両端側をシールした後、前記外装材内を脱気しながら前記収容部の周面側をシールする請求項１５に記載の電池の製造方法。 The battery manufacturing method according to claim 15, wherein, at the time of the sealing, after sealing both end sides of the housing portion, the peripheral surface side of the housing portion is sealed while degassing the exterior material.
  17. 　前記周面側のシールの際には、前記外装材に張力を加えて前記電極体と前記外装材とを密着させる請求項１６に記載の電池の製造方法。 The battery manufacturing method according to claim 16, wherein when sealing the peripheral surface, the electrode body and the exterior material are brought into close contact with each other by applying tension to the exterior material.
  18. 　前記外装材の成形の際には、同一方向に延設され、該延設の方向に直交する方向に並ぶ、高さが異なる略部分円柱状の第１成形部および略部分円柱状の第２成形部により、前記外装材の第１面を押圧するとともに、前記第１成形部および前記第２成形部の間において前記外装材の第２面を支持部材により支持しつつ、前記外装材を変形させる請求項１５に記載の電池の製造方法。 When molding the exterior material, a first part having a substantially partial columnar shape and a second part having a substantially partial columnar shape extending in the same direction and arranged in a direction orthogonal to the direction of the extension and having different heights. The molding part is pressed against the first surface of the exterior material, and the exterior material is deformed while the second surface of the exterior material is supported by a support member between the first molded part and the second molded part. The battery manufacturing method according to claim 15.
  19. 　前記第１成形部の高さは、前記第２成形部の高さに比べて高く、
    　前記第１成形部の幅は、前記第２の成形部の幅に比べて広い請求項１８に記載の電池の製造方法。     The height of the first molding part is higher than the height of the second molding part,
    The battery manufacturing method according to claim 18, wherein a width of the first molded part is wider than a width of the second molded part.
  20. 　前記支持部材の先端は、前記外装材が載置される載置面を基準にして前記押圧の方向にずれた位置にある請求項１８に記載の電池の製造方法。 The battery manufacturing method according to claim 18, wherein a tip of the support member is located at a position shifted in the pressing direction with reference to a mounting surface on which the exterior material is mounted.
  21. 　前記支持部材の厚みは、前記外装材の厚さの１０倍以下である請求項１５に記載の電池の製造方法。 The battery manufacturing method according to claim 15, wherein a thickness of the supporting member is 10 times or less of a thickness of the exterior material.
PCT/JP2017/000280 2016-01-06 2017-01-06 Battery, method for manufacturing same, battery pack, and electronic device WO2017119486A1 (en)

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